This list of the non-marine molluscs of Ireland

Ireland

Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

comprises 165 species of non-marine molluscs which have been recorded as part of the fauna of Ireland

Fauna of Ireland

The fauna of Ireland comprises all the animal species inhabiting the island and surrounding waters.-Mammals:Only 26 land mammal species are native to Ireland, because it was isolated from the European mainland by rising sea levels after the Midlandian Ice Age...

. These are terrestrial

Terrestrial animal

Terrestrial animals are animals that live predominantly or entirely on land , as compared with aquatic animals, which live predominantly or entirely in the water , or amphibians, which rely on a combination of aquatic and terrestrial habitats...

 and aquatic gastropods, and bivalves; the list does not include species of molluscs which are considered to be fully marine

Marine (ocean)

Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology...

.

In other words: this list includes land snail

Snail

Snail is a common name applied to most of the members of the molluscan class Gastropoda that have coiled shells in the adult stage. When the word is used in its most general sense, it includes sea snails, land snails and freshwater snails. The word snail without any qualifier is however more often...

s and slug

Slug

Slug is a common name that is normally applied to any gastropod mollusc that lacks a shell, has a very reduced shell, or has a small internal shell...

s, and freshwater

Freshwater

Fresh water is naturally occurring water on the Earth's surface in ice sheets, ice caps, glaciers, bogs, ponds, lakes, rivers and streams, and underground as groundwater in aquifers and underground streams. Fresh water is generally characterized by having low concentrations of dissolved salts and...

 and brackish water

Brackish water

Brackish water is water that has more salinity than fresh water, but not as much as seawater. It may result from mixing of seawater with fresh water, as in estuaries, or it may occur in brackish fossil aquifers. The word comes from the Middle Dutch root "brak," meaning "salty"...

 snails. It also includes freshwater mussels and freshwater clams, including some that can tolerate brackish water. Molluscs that are fully adapted to live in the sea are not included here.

Ireland

Ireland

Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

 is an island in the northeastern Atlantic

Atlantic Ocean

The Atlantic Ocean is the second-largest of the world's oceanic divisions. With a total area of about , it covers approximately 20% of the Earth's surface and about 26% of its water surface area...

. It consists of the Republic of Ireland

Republic of Ireland

Ireland , described as the Republic of Ireland , is a sovereign state in Europe occupying approximately five-sixths of the island of the same name. Its capital is Dublin. Ireland, which had a population of 4.58 million in 2011, is a constitutional republic governed as a parliamentary democracy,...

, also known simply as Ireland (or in the Irish language Éire), and Northern Ireland

Northern Ireland

Northern Ireland is one of the four countries of the United Kingdom. Situated in the north-east of the island of Ireland, it shares a border with the Republic of Ireland to the south and west...

, which is part of the United Kingdom

United Kingdom

The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

.

The mollusc fauna of the island of Ireland has not been as thoroughly researched as that of the island of Great Britain, and therefore it is possible that some uncommon and local species (whether native or introduced) may, as yet, have been overlooked. Even so, it seems that the non-marine molluscan fauna of Ireland is a smaller fauna that that of Great Britain.

This list is of land and freshwater molluscs only. Some species of gastropods listed here (for example Peringia ulvae

Peringia ulvae

Hydrobia ulvae, also known as Peringia ulvae, common name the Laver spire shell, is an European species of very small aquatic snail with gills and an operculum, a gastropod mollusk in the family Hydrobiidae....

) live in habitats that are intermediate between freshwater and saltwater. Others live in habitats that are intermediate between land and saltwater. Both of these kinds of species are often also included in marine faunal lists.

In addition to the species that live naturally outdoors in Ireland, there are at least 2 aquatic gastropod species which live only in artificially-heated indoor environments such as aquaria

Aquarium

An aquarium is a vivarium consisting of at least one transparent side in which water-dwelling plants or animals are kept. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, marine mammals, turtles, and aquatic plants...

 in greenhouse

Greenhouse

A greenhouse is a building in which plants are grown. These structures range in size from small sheds to very large buildings...

s. These are known as "hothouse aliens", and in this list they are not counted as part of the total fauna.

A number of species are listed with subspecies, in cases where there are recognized subspecies in different parts of Europe. In some cases a synonym is given, where the species may be perhaps better known under an older name.

The list is arranged by presumed biological affinity, rather than being alphabetical by family.

The following table shows a summary of species numbers. It is not always easy to define which species are aquatic and which are terrestrial, as some species such as Galba truncatula

Galba truncatula

Galba truncatula is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Lymnaeidae, the pond snails.Until recently, this species was commonly known as Lymnaea truncatula.-Description:...

are virtually amphibious. It also can be difficult to determine which species are introduced, as some introductions are quite ancient, for example from the Paleolithic

Paleolithic

The Paleolithic Age, Era or Period, is a prehistoric period of human history distinguished by the development of the most primitive stone tools discovered , and covers roughly 99% of human technological prehistory...

. Those species that do not have a shell usually do not leave an archeological or fossil record, and therefore it is not always possible to determine whether they are native or introduced.

Non-marine molluscs of Ireland
Land gastropods	107
Aquatic gastropods	37
Gastropod total:	144
Freshwater bivalves	21
Mollusc total:	165
Introduced land gastropods in natural habitats:	15
Introduced bivalves in natural habitats:	1
Total introduced molluscs in natural habitats:	16
Gastropods living as "hothouse aliens"	2
Bivalves living as "hothouse aliens"	0

Conservation

Species protected by EU Habitats Directive include: Geomalacus maculosus (annex II and IV), Vertigo angustior

Vertigo angustior

The narrow-mouthed whorl snail, scientific name Vertigo angustior, is a species of minute land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Vertiginidae.- Distribution :* IUCN red list - conservation dependent...

, Vertigo geyeri

Vertigo geyeri

Vertigo geyeri is a species of small land snail from the family Vertiginidae. It lives in marshes.The specific name geyeri is in honor of German zoologist David Geyer .-Distribution and conservation status:...

, Vertigo moulinsiana (annex II) and Margaritifera margaritifera (annex II and V).

Two species have been protected by the Wildlife Act of 1976 since 1990: Geomalacus maculosus and Margaritifera margaritifera. They were added by regulation SI 112/1990.

A recent regional red list has been published of the non-marine molluscs of Ireland by Byrne et al. (2009). In this publication, the threat status of 150 native species was evaluated using IUCN regional guidelines. Of these species, two are considered to be regionally extinct, five critically endangered

Critically endangered

Version 2010.3 of the IUCN Red List of Threatened Species identified 3744 Critically Endangered species, subspecies and varieties, stocks and subpopulations.Critically Endangered by kingdom:*1993 Animalia*2 Fungi*1745 Plantae*4 Protista-References:...

, fourteen endangered, twenty-six vulnerable

Vulnerable species

On 30 January 2010, the IUCN Red List of Threatened Species identified 9694 Vulnerable species, subspecies and varieties, stocks and sub-populations.-References:...

, six near threatened

Near Threatened

Near Threatened is a conservation status assigned to species or lower taxa that may be considered threatened with extinction in the near future, although it does not currently qualify for the threatened status...

, and the rest of least concern

Least Concern

Least Concern is an IUCN category assigned to extant taxon or lower taxa which have been evaluated but do not qualify for any other category. As such they do not qualify as threatened, Near Threatened, or Conservation Dependent...

, or data deficient

Data Deficient

Data Deficient is a category applied by the IUCN, other agencies, and individuals to a species when the available information is not sufficient for a proper assessment of conservation status to be made...

. This publication has sparked some media discussion about molluscan conservation in Ireland, including articles written in the Irish Times and the Irish Daily Mail.

Regional Red List of Irish non-marine molluscs

The following species have been assigned threat categories or considered regionally extinct on the island of Ireland, at the present time:

Regionally extinct (RE)
Helicigona lapicida (Linnaeus, 1758); Omphiscola glabra (O.F. Müller, 1774) - listed as extinct in the red list, but it was rediscovered in 2009.

Critically Endangered (CR)
Pisidium conventus Clessin, 1877
Pomatias elegans (O.F. Müller, 1774)
Margaritifera margaritifera (Linnaeus, 1758)
Truncatella subcylindrica (Linnaeus, 1767)
Margaritifera durrovensis Philips, 1928

Endangered (EN)
Gyraulus laevis (Alder, 1838)
Pisidium pulchellum Jenyns, 1832
Hydrobia acuta neglecta (Muus, 1963)
Pupilla muscorum (Linnaeus, 1758)
Mercuria cf. similis (Draparnaud, 1805)
Quickella arenaria (Potiez & Michaud, 1835)
Merdigera obscura (O.F. Müller, 1774)
Spermodea lamellata (Jeffreys, 1830)
Myxas glutinosa (O.F. Müller, 1774)
Succinella oblonga Draparnaud, 1801
Pisidium moitessierianum Paladilhe, 1866
Vertigo moulinsiana (Dupuy, 1849)
Pisidium pseudosphaerium Schlesch, 1947
Vertigo pusilla Müller, 1774

Vulnerable (VU)
Acicula fusca (Montagu, 1803)
Pisidium lilljeborgii Clessin, 1866
Anisus vortex (Linnaeus, 1758)
Radix auricularia (Linnaeus, 1758)
Anodonta anatina (Linnaeus, 1758)
Sphaerium nucleus (Studer, 1820)
Anodonta cygnea (Linnaeus, 1758)
Tandonia rustica (Millet, 1843)
Aplexa hypnorum (Linnaeus, 1758)
Testacella haliotidea Draparnaud, 1801
Arianta arbustorum (Linnaeus, 1758)
Vallonia pulchella (O.F. Müller, 1774)
Balea perversa (Linnaeus, 1758)
Ventrosia ventrosa (Montagu, 1803)
Cecilioides acicula (Müller, 1774)
Vertigo angustior Jeffreys, 1830
Cochlodina laminata (Montagu, 1803)
Vertigo antivertigo (Draparnaud, 1801)
Helicella itala (Linnaeus, 1758)
Vertigo geyeri Lindholm, 1925
Leiostyla anglica (A. Férussac, 1821)
Vertigo lilljeborgi (Westerlund, 1871)
Limax cinereoniger Wolf, 1803
Zenobiella subrufescens (J.S. Miller, 1822)
Musculium lacustre (O.F. Müller, 1774)
Zonitoides excavatus (Alder, 1830)

Systematic list

The list is arranged by presumed biological affinity, rather than being alphabetical by family.

A number of species are listed with subspecies, in cases where there are well-recognized subspecies in different parts of Europe. For some species a synonym is given, where the species may perhaps be better known under another name.

An attempt has been made to label the families as aquatic, terrestrial or intermediate, and an indication is given where it is thought that the species is introduced. Those species that do not have a shell usually do not leave an archeological or fossil record, and therefore it is not always possible to determine whether they are native or introduced. Species are considered to be native, unless otherwise indicated; that information is taken from Kerney, 1999.

Gastropoda

Neritidae

Neritidae

Neritidae, common name the nerites, is a taxonomic family of small to medium-sized saltwater and freshwater snails which have a gill and a distinctive operculum, marine, brackish water and freshwater gastropod mollusks in the order Neritoida....

 - aquatic (also tolerates brackish water)

• Theodoxus fluviatilis
  Theodoxus fluviatilis
  Theodoxus fluviatilis, common name the river nerite, is a small species of freshwater and brackish water snail with a gill and an operculum. It is an aquatic gastropod mollusk in the family Neritidae, the nerites....
  
  fluviatilis (Linnaeus, 1758)

Aciculidae

Aciculidae

The Aciculidae are a family of minute land snails which have opercula. In other words, Aciculidae are terrestrial operculate gastropods....

 - terrestrial

• Acicula fusca
  Acicula fusca
  Acicula fusca is a minute species of land snail with an operculum, a terrestrial gastropod mollusk, a micromollusk, in the family Aciculidae.- Shell description :The shell of this species is long and narrow, attaining a maximum length of only 2 mm....
  
  (Montagu, 1803)

Viviparidae

Viviparidae

Viviparidae, sometimes known as the river snails or mystery snails, are a family of large operculate freshwater snails, aquatic gastropod mollusks....

 - aquatic

• Viviparus viviparus
  Viviparus viviparus
  Viviparus viviparus is a species of large freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Viviparidae, the river snails.-Distribution:This is a European species....
  
  (Linnaeus, 1758)

Assimineidae

Assimineidae

Assimineidae is a family of minute snails with an operculum that live in saltwater, freshwater or on the land; they are mostly aquatic gastropod mollusks or micromollusks, in the clade Littorinimorpha.- Ecology :...

 - terrestrial (intermediate marine)

• Assiminea grayana
  Assiminea grayana
  Assiminea grayana, common name the "dun sentinel", is a species of very small salt marsh snail, a terrestrial Assiminea grayana, common name the "dun sentinel", is a species of very small salt marsh snail, a terrestrial Assiminea grayana, common name the "dun sentinel", is a species of very small...
  
  Fleming, 1828

Bithyniidae

Bithyniidae

Bithyniidae is a family of small freshwater snails with an operculum, aquatic gastropod molluscs in the clade Littorinimorpha.Their minute shell is often colored. They are characterized by a calcareous operculum, a lobe on the upper surface of the neck. The ctenidium, the respiratory gill-comb, is...

 - aquatic

• Bithynia leachii
  Bithynia leachii
  Bithynia leachii is species of small freshwater snail with an operculum, an aquatic prosobranch gastropod mollusk in the family Bithyniidae.-Shell description:The shell of the species grows to be 6.5 mm in maximum dimension....
  
  (Sheppard, 1823)
• Bithynia tentaculata
  Bithynia tentaculata
  Bithynia tentaculata, common names the mud bithynia or common bithynia, or faucet snail is a relatively small species of freshwater snail with gills and an operculum, an aquatic prosobranch gastropod mollusk in the family Bithyniidae....
  
  (Linnaeus, 1758)

Hydrobiidae

Hydrobiidae

Hydrobiidae, common name mud snails, is a large cosmopolitan taxonomic family of very small freshwater snails and brackish water snails that have an operculum, aquatic gastropod mollusks in the clade Littorinimorpha.- Distribution :...

 - aquatic (some are arguably marine)

• Hydrobia acuta
  Hydrobia acuta
  Hydrobia acuta is a species of very small brackish water snail with a gill and an operculum, an aquatic gastropod mollusk in the family Hydrobiidae.-Distribution:...
  
  neglecta Muus, 1963
• Hydrobia ventrosa
  Hydrobia ventrosa
  Ecrobia ventrosa, common name : the spire snail, is a European species of small brackish water snail with a gill and an operculum, an aquatic gastropod mollusk in the family Hydrobiidae.-Distribution:This species occurs on the coasts of:...
  
  (Montagu, 1803) = Ecrobia ventrosa
• Peringia ulvae
  Peringia ulvae
  Hydrobia ulvae, also known as Peringia ulvae, common name the Laver spire shell, is an European species of very small aquatic snail with gills and an operculum, a gastropod mollusk in the family Hydrobiidae....
  
  (Pennant, 1777)
• Mercuria c.f. similis (Draparnaud, 1805) = Mercuria confusa
  Mercuria confusa
  Mercuria confusa, common name the '"swollen spire snail", is a northern European species of small brackish water or freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Hydrobiidae....
  
  (Frauenfeld, 1863)
• Potamopyrgus antipodarum (Gray, 1843) - introduced

Valvatidae

Valvatidae

Valvatidae, the valve snails, is a taxonomic family of very small freshwater snails with an operculum, aquatic gastropod mollusks.- Taxonomy :...

 - aquatic

• Valvata cristata
  Valvata cristata
  Valvata cristata is a species of minute freshwater snail with an operculum, an aquatic gastropod mollusk or micromollusk in the family Valvatidae, the valve snails.-Shell description:...
  
  O. F. Müller, 1774
• Valvata piscinalis
  Valvata piscinalis
  Valvata piscinalis, common name the European stream valvata, is a species of minute freshwater snail with gills and an operculum, an aquatic gastropod mollusk in the family Valvatidae, the valve snails. It is also known as Cincinna piscinalis .- Subspecies :Subspecies of Valvata piscinalis...
  
  (O. F. Müller, 1774)

Pomatiidae

Pomatiidae

The family Pomatiidae is a taxonomic family of small operculate land snails, terrestrial gastropod mollusks that can be found over the warmer parts of the Old World. In the older literature, this family is designated as Pomatiasidae....

 - terrestrial

• Pomatias elegans
  Pomatias elegans
  Pomatias elegans, common name the round-mouthed snail, is a species of small land snail with an operculum, a terrestrial gastropod mollusk in the family Pomatiidae.-Distribution:...
  
  (Müller, 1774)

The following gastropods are pulmonates:

Ellobiidae

Ellobiidae

Ellobiidae is a family of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the clade Eupulmonata. This is the only family in the superfamily Ellobioidea, according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005)....

 - terrestrial or semi-marine

• Carychium minimum
  Carychium minimum
  Carychium minimum is a species of very small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Ellobiidae.- Distribution :This species occurs in European countries and islands including:* Czech Republic* Netherlands...
  
  Müller, 1774
• Carychium tridentatum
  Carychium tridentatum
  Carychium tridentatum is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Ellobiidae.- Distribution :This species occurs in European countries and islands including:* Bulgaria* Czech Republic...
  
  (Risso, 1826)
• Leucophytia bidentata
  Leucophytia bidentata
  Leucophytia bidentata is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Ellobiidae.This species of snail is semi-marine in habitat.-Distribution:...
  
  (Montagu, 1808)
• Myosotella denticulata
  Myosotella denticulata
  Myosotella denticulata, common name the "mouse ear snail", is a European species of small, salt marsh snail, a terrestrial pulmonate gastropod mollusk in the family Ellobiidae.- Distribution :This species is found in:* Great Britain* Ireland...
  
  (Montagu, 1803)
• Myosotella myosotis
  Myosotella myosotis
  Myosotella myosotis, common name the mouse ear snail, is an European species of small, salt marsh snail, a terrestrial pulmonate gastropod mollusk in the family Ellobiidae....
  
  (Draparnaud, 1801)

Otinidae - aquatic (almost fully marine, but a pulmonate)

• Otina ovata
  Otina ovata
  Otina ovata is a species of small, air-breathing sea snail or sea slug, a marine pulmonate gastropod mollusk in the superfamily Otinoidea.Otina ovata is the only species in the genus Otina...
  
  (Brown, 1827)

Physidae

Physidae

Physidae, common name bladder snails, are a monophyletic taxonomic family of small freshwater snails, aquatic pulmonate gastropod molluscs in the clade Hygrophila....

 - aquatic

• Aplexa hypnorum
  Aplexa hypnorum
  Aplexa hypnorum, common name the moss bladder snail, is a species of small air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Physidae, a family which are sometimes known as the bladder snails....
  
  (Linnaeus, 1758)
• Physa fontinalis
  Physa fontinalis
  Physa fontinalis is a species of freshwater snail, an aquatic gastropod mollusk in the family Physidae. The shells of this species are left-handed or sinistral.-Distribution:...
  
  (Linnaeus, 1758)
• Physella acuta
  Physella acuta
  Physella acuta, common name the European physa, is a species of small, left-handed or sinistral, air-breathing freshwater snail, an aquatic gastropod mollusk in the family Physidae.-Shell description:...
  
  (Draparnaud, 1805) = Physella heterostropha (Say, 1817) - introduced
• Physella gyrina
  Physella gyrina
  Physella gyrina common name the "tadpole physa", is a species of small, left-handed or sinistral, air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Physidae.-Shell description:...
  
  (Say, 1821) - introduced

Lymnaeidae

Lymnaeidae

Lymnaeidae is a taxonomic family of small to large air-breathing freshwater snails, aquatic pulmonate gastropod mollusks, that belong to the clade Hygrophila....

 - aquatic

• Galba truncatula
  Galba truncatula
  Galba truncatula is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Lymnaeidae, the pond snails.Until recently, this species was commonly known as Lymnaea truncatula.-Description:...
  
  (O. F. Müller, 1774)
• Omphiscola glabra
  Omphiscola glabra
  Omphiscola glabra is a species of small to medium-size, air-breathing, freshwater snail, an aquatic pulmonate gastropod mollusk in the family Lymnaeidae.-Distribution:This European snail can be found from southern Scandinavia to southern Spain....
  
  (O. F. Müller, 1774) - at one site in the south east of Ireland was found in 2009, but it is listed as extinct at at local red list (2009).
• Lymnaea stagnalis
  Lymnaea stagnalis
  Lymnaea stagnalis, better known as the great pond snail, is a species of large air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Lymnaeidae.-Distribution:The distribution of this species is Holarctic...
  
  (Linnaeus, 1758)
• Lymnaea fusca
  Lymnaea fusca
  Lymnaea fusca is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Lymnaeidae.-Distribution:This species is known to occur in a number of countries and islands including:* Great Britain* Ireland...
  
  (C.Pfeiffer, 1821)
• Radix auricularia
  Radix auricularia
  Radix auricularia, common name the big-ear radix, is a species of medium-sized freshwater snail, an aquatic pulmonate gastropod mollusk in the family Lymnaeidae.Radix auricularia is the type species of the genus Radix.-Forms:...
  
  (Linnaeus, 1758)
• Radix balthica
  Radix balthica
  Radix balthica is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Lymnaeidae, the pond snails.- Distribution :This species is found in European countries and islands including:* Czech Republic* Germany...
  
  (Linnaeus, 1758)
• Radix peregra
  Radix peregra
  Radix peregra, previously known as Lymnaea peregra or Lymnaea pereger, is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod in the family Lymnaeidae, the pond snails....
  
  (Linnaeus, 1758)
• Myxas glutinosa
  Myxas glutinosa
  The glutinous snail, Myxas glutinosa is a species of small air-breathing freshwater snail, an aquatic gastropod mollusc in the family Lymnaeidae, the pond snails.- Anatomy :...
  
  (O. F. Müller, 1774)

Planorbidae

Planorbidae

Planorbidae, common name the ramshorn snails or ram's horn snails, is a family of air-breathing freshwater snails, aquatic pulmonate gastropod mollusks....

 - aquatic

• Planorbis carinatus
  Planorbis carinatus
  Planorbis carinatus is species of freshwater gastropod from family Planorbidae.-Description:Width of shell is 9–15 mm. Its keel is in the centre of the shell.-Distribution:* Not listed in IUCN red list - not evaluated * Czech Republic...
  
  O. F. Müller, 1774
• Planorbis planorbis
  Planorbis planorbis
  Planorbis planorbis is a species of air-breathing freshwater snail, an aquatic gastropod mollusk in the family Planorbidae, the ram's horn snails.-Description:...
  
  (Linnaeus, 1758)
• Anisus leucostoma
  Anisus leucostoma
  Anisus leucostoma is a European species of small air-breathing freshwater snail, an aquatic pulmonate gastropod in the family Planorbidae, the ram's horn snails and their allies.- Synonyms :...
  
  (Millet, 1813)
• Anisus vortex
  Anisus vortex
  Anisus vortex is a species of small freshwater snail, an aquatic gastropod mollusk in the family Planorbidae, the ram's horn snails and their allies.- Distribution :This species occurs in countries and islands including:...
  
  (Linnaeus, 1758)
• Anisus vorticulus
  Anisus vorticulus
  The ramshorn snail, Anisus vorticulus is a species of minute, air-breathing, freshwater snail, an aquatic gastropod mollusk in the family Planorbidae, the ramshorn snails.-Distribution:...
  
  (Troschel, 1834)
• Anisus spirorbis
  Anisus spirorbis
  Anisus spirorbis is a species of small freshwater air-breathing snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.- Distribution :This species occurs in countries that include:...
  
  (Linnaeus, 1758)
• Bathyomphalus contortus
  Bathyomphalus contortus
  Bathyomphalus contortus is a species of small air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails and their allies.-Distribution:The distribution of this species is Palearctic:...
  
  (Linnaeus, 1758)
• Gyraulus laevis
  Gyraulus laevis
  Gyraulus laevis is a small species of freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.-Distribution:The distribution of this species is Holarctic:...
  
  (Alder, 1838)
• Gyraulus albus
  Gyraulus albus
  Gyraulus albus is a small species of freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.-Distribution:Palearctic:* Czech Republic - least concern * Germany...
  
  (O. F. Müller, 1774)
• Gyraulus crista
  Gyraulus crista
  Gyraulus crista, commonly called the Nautilus ramshorn, is a minute species of freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.Synonyms:* Armiger crista* Planorbis crista...
  
  (Linnaeus, 1758)
• Hippeutis complanatus
  Hippeutis complanatus
  Hippeutis complanatus, or the flat ram's-horn snail, is a species of minute air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk or micromollusk in the family Planorbidae, the ram's horn snails....
  
  (Linnaeus, 1758)
• Planorbarius corneus
  Planorbarius corneus
  Planorbarius corneus, common name the great ramshorn, is a relatively large species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails, or planorbids, which all have sinistral or left-coiling shells.The shell of this species...
  
  corneus (Linnaeus, 1758)
• Ancylus fluviatilis
  Ancylus fluviatilis
  Ancylus fluviatilis is a species of very small, freshwater, air-breathing limpet, an aquatic pulmonate gastropod mollusk in the tribe Ancylini within the family Planorbidae, the ram's horn snails and their allies.-Distribution and conservation status:...
  
  O. F. Müller, 1774

Acroloxidae

Acroloxidae

Acroloxidae, commonly known as river limpets, are a taxonomic family of very small, freshwater snails, aquatic pulmonate gastropod limpet-like mollusks with a simple flattened conical shell in the clade Hygrophila....

 - aquatic

• Acroloxus lacustris
  Acroloxus lacustris
  Acroloxus lacustris, or the lake limpet, is a small freshwater limpet or snail, a species of aquatic gastropod mollusk in the family Acroloxidae.- Distribution :...
  
  (Linnaeus, 1758)

Succineidae

Succineidae

Succineidae are a family of small to medium-sized, air-breathing, land snails , terrestrial pulmonate gastropod molluscs. They are commonly called amber snails because their thin fragile shells are translucent and amber-colored...

 - terrestrial (some almost amphibious)

• Quikella arenaria (Bouchard-Chantereaux, 1837) = Catinella arenaria
  Catinella arenaria
  The sandbowl snail, Catinella arenaria, also known as Quickella arenaria, is a small species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Succineidae, the amber snails.-Habitat:...
  
  
• Succinella oblonga
  Succinella oblonga
  Succinella oblonga is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Succineidae.Succinella oblonga is the type species of the genus Succinella.- Distribution :* Latvia* Bulgaria* Slovakia...
  
  Draparnaud, 1801
• Succinea putris
  Succinea putris
  Succinea putris is a species of small, air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Succineidae, the amber snails.-Distribution:Distribution: European-Siberian region.* Czech Republic - least concern * Germany...
  
  Linnaeus, 1758
• Oxyloma elegans
  Oxyloma elegans
  Oxyloma elegans is a species of small European land snail, a terrestrial pulmonate gastropod mollusk belonging to the family Succineidae, the amber snails.-Distribution and conservation status:...
  
   elegans (Risso, 1826) = Oxyloma pfeifferi (Rossmässler, 1835)
• Oxyloma sarsii
  Oxyloma sarsii
  Oxyloma sarsii is a species of small European land snail, a terrestrial pulmonate gastropod mollusk belonging to the family Succineidae, the amber snails.-Distribution:...
  
  (Esmark, 1886)

Cochlicopidae

Cochlicopidae

Cochlicopidae is a taxonomic family of small, air-breathing, land snails, terrestrial pulmonate gastropod mollusks in the superfamily Cochlicopoidea.-Anatomy:...

 - terrestrial

• Cochlicopa c.f. lubrica = Cochlicopa lubrica
  Cochlicopa lubrica
  Cochlicopa lubrica is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Cochlicopidae.This species can be hard to differentiate from the similar species Cochlicopa lubricella.-Taxonomy:...
  
  (O. F. Müller, 1774)
• Cochlicopa c.f. lubricella = Cochlicopa lubricella
  Cochlicopa lubricella
  Cochlicopa lubricella is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Cochlicopidae.This species is closely related to Cochlicopa lubrica, but the shell is narrower in proportion....
  
  (Porro, 1838)

Pyramidulidae

Pyramidulidae

Pyramidulidae is a family of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Pupilloidea.-Anatomy:In this family, the number of haploid chromosomes lies between 26 and 30 ....

 - terrestrial

• Pyramidula umbilicata
  Pyramidula umbilicata
  Pyramidula umbilicata is a species of very small air-breathing land snail, a terrestrial pulmonate gastropod mollusk or micromollusc in the family Pyramidulidae.- Shell description :...
  
  (Montagu, 1803)

Vertiginidae

Vertiginidae

Vertiginidae is a family of minute, air-breathing land snails, terrestrial pulmonate gastropod molluscs or micromollusks in the superfamily Pupilloidea.- Distribution :...

 - terrestrial

• Columella edentula
  Columella edentula
  Columella edentula, common name the "toothless column snail", is a species of very small, air-breathing land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Vertiginidae.-Distribution:...
  
  Draparnaud, 1805)
• Columella aspera
  Columella aspera
  Columella aspera is a species of very small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Vertiginidae, the vertigo snails.- Distribution :This species occurs in countries and islands including:* Czech Republic...
  
  Walden, 1966
• Vertigo pusilla
  Vertigo pusilla
  Vertigo pusilla is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Vertiginidae.Vertigo pusilla is the type species of the genus Vertigo.- Shell description :...
  
  O. F. Müller, 1774
• Vertigo antivertigo
  Vertigo antivertigo
  Vertigo antivertigo is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Vertiginidae.- Distribution :This species occurs in countries and islands including:* Czech Republic...
  
  (Draparnaud, 1801)
• Vertigo geyeri
  Vertigo geyeri
  Vertigo geyeri is a species of small land snail from the family Vertiginidae. It lives in marshes.The specific name geyeri is in honor of German zoologist David Geyer .-Distribution and conservation status:...
  
  Lindholm, 1925
• Vertigo lilljeborgi
  Vertigo lilljeborgi
  Vertigo lilljeborgi is a species of minute land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Vertiginidae, the vertigo snails.-Distribution:...
  
  (Westerlund, 1871)
• Vertigo moulinsiana (Dupuy, 1849)
• Vertigo pusilla
  Vertigo pusilla
  Vertigo pusilla is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Vertiginidae.Vertigo pusilla is the type species of the genus Vertigo.- Shell description :...
  
  O. F. Müller, 1774
• Vertigo pygmaea
  Vertigo pygmaea
  Vertigo pygmaea, common name the "crested vertigo", is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Vertiginidae.- Shell description :...
  
  (Draparnaud, 1801)
• Vertigo substriata
  Vertigo substriata
  Vertigo substriata is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Vertiginidae.- Distribution :The type locality is the Barnstaple district, in Devonshire, England...
  
  (Jeffreys, 1833)
• Vertigo angustior
  Vertigo angustior
  The narrow-mouthed whorl snail, scientific name Vertigo angustior, is a species of minute land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Vertiginidae.- Distribution :* IUCN red list - conservation dependent...
  
  Jeffreys, 1830

Pupillidae

Pupillidae

Pupillidae is a family of mostly minute, air-breathing, land snails, terrestrial pulmonate gastropod mollusks or micromollusks in the clade Stylommatophora....

 - terrestrial

• Pupilla muscorum
  Pupilla muscorum
  Pupilla muscorum is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusk or micromollusk in the family Pupillidae.- Taxonomy :A variety Pupilla muscorum var...
  
  (Linnaeus, 1758)

Lauriidae

Lauriidae

Lauriidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks.- Taxonomy :The Lauriidae family is classified within the informal group Orthurethra, itself belonging to the clade Stylommatophora within the clade Eupulmonata .The family Lauriidae has no...

 - terrestrial

• Leiostyla anglica
  Leiostyla anglica
  Leiostyla anglica is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Lauriidae.-Distribution:This species is known to occur in a number of European countries and islands:* Great Britain* Ireland...
  
  (Wood, 1828)
• Lauria cylindracea
  Lauria cylindracea
  Lauria cylindracea, common name "the common chrysalis snail", is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Lauriidae.-Distribution:...
  
  (da Costa, 1778)

Valloniidae

Valloniidae

Valloniidae is a taxonomic family of small and minute, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the clade Stylommatophora.-Anatomy:...

 - terrestrial

• Vallonia costata
  Vallonia costata
  Vallonia costata is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Valloniidae.-Distribution:This species occurs in areas including:* Great Britain* Ireland* Czech Republic* Slovakia* Poland...
  
  (O. F. Müller, 1774)
• Vallonia pulchella
  Vallonia pulchella
  Vallonia pulchella, common name the lovely vallonia, is a species of very small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Valloniidae.-Distribution:This species occurs in countries and islands including:...
  
  (O. F. Müller, 1774)
• Vallonia c.f. excentrica = Vallonia excentrica
  Vallonia excentrica
  Vallonia excentrica, common name Excentric Vallonia, is a species of very small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Valloniidae.-Distribution:This species occurs in areas which include:Europe:...
  
  Sterke, 1892
• Acanthinula aculeata
  Acanthinula aculeata
  Acanthinula aculeata is a species of minute, air-breathing land snail, a terrestrial pulmonate gastropod molluskor micromollusk in the family Valloniidae.-Distribution:...
  
  (O. F. Müller, 1774)
• Spermodea lamellata
  Spermodea lamellata
  Spermodea lamellata is a species of minute European land snail, a terrestrial gastropod mollusc, or micromollusc, in the family Valloniidae.-Distribution:This species occurs in areas which include:* Denmark* Great Britain* Ireland* Czech Republic...
  
  (Jeffreys, 1830)

Enidae

Enidae

Enidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks.- Anatomy :In this family, the number of haploid chromosomes lies between 21 and 25 .- 1998 taxonomy :...

 - terrestrial

• Merdigera obscura
  Merdigera obscura
  Merdigera obscura is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Enidae.- Distribution :This species occurs in countries and islands which include:* Czech Republic* Great Britain* Ireland...
  
  = Ena obscura (O. F. Müller, 1774)

Punctidae

Punctidae

Punctidae, common name the "dot snails", is a family of minute air-breathing land snails, terrestrial pulmonate gastropod mollusks or micromollusks in the informal group Sigmurethra ....

 - terrestrial

• Punctum pygmaeum
  Punctum pygmaeum
  Punctum pygmaeum is a species of very small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Punctidae.- Distribution :This species occurs in countries and islands which include:* Czech Republic* Great Britain...
  
  (Draparnaud, 1801)

Discidae

Discidae

Discidae is a taxonomic family of small air-breathing land snails, terrestrial gastropod mollusks in the superfamily Punctoidea.-Genera:The family Discidae has no subfamilies...

 - terrestrial

• Discus rotundatus
  Discus rotundatus
  Discus rotundatus is a species of small, air-breathing, land snail, a terrestrial pulmonate gastropod mollusk in the family Discidae, the disk snails.-Distribution:...
  
  rotundatus (O. F. Müller, 1774)

Arionidae

Arionidae

Arionidae, common name the "roundback slugs" or "round back slugs" are a taxonomic family of air-breathing land slugs, terrestrial pulmonate gastropod mollusks in the superfamily Arionoidea.- Distribution :...

 - terrestrial

• Arion ater (Linnaeus, 1758)
• Arion flagellus
  Arion flagellus
  Arion flagellus, common name the "Durham slug", is a species of air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Arionidae, the roundback slugs.-Distribution:...
  
  Collinge, 1893
• Arion vulgaris Moquin-Tandon, 1855 = Arion lusitanicus
  Arion lusitanicus
  Arion lusitanicus, common name Portuguese slug, is a species of air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Arionidae.- Description :It is a rather large slug of reddish brown colour....
  
  Mabille, 1868 - introduced
• Arion subfuscus Draparnaud, 1805 (if this is considered to be a separate taxon from A. fuscus)
• Arion fuscus
  Arion fuscus
  Arion fuscus is a species of small air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Arionidae, the roundback slugs....
  
  (O.F. Müller, 1774)
• Arion circumscriptus
  Arion circumscriptus
  Arion circumscriptus, common name Brown-banded arion, is a species of air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Arionidae.- Distribution :This species occurs in countries and islands including:...
  
  Johnston, 1828
• Arion rufus (Linnaeus, 1758)
• Arion silvaticus
  Arion silvaticus
  Arion silvaticus is a species of air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Arionidae.- Distribution :This species occurs in countries and islands including:* Czech Republic* Great Britain* Ireland...
  
  Lohmander, 1937

• Arion fasciatus
  Arion fasciatus
  Arion fasciatus, common name the Orange-banded Arion, is a species of air-breathing, completely shell-less, land slug, a terrestrial pulmonate gastropod mollusk in the family Arionidae, the round-back slugs, first described by Sven Nilsson in 1823....
  
  (Nilsson, 1823)
• Arion hortensis
  Arion hortensis
  Arion hortensis, common name the "garden slug", "small striped slug" or "black field slug" is a species of small air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Arionidae, the roundback slugs....
  
  A. Férussac, 1819
• Arion distinctus
  Arion distinctus
  Arion distinctus, common name the darkface arion, is species of air-breathing land slug in the family Arionidae, sometimes known as the roundback slugs...
  
  J. Mabille, 1868
• Arion owenii
  Arion owenii
  Arion owenii is a species of small air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Arionidae, the roundback slugs.-Distribution:This species occurs in:* Great Britain* Ireland-References:* AnimalBase info:...
  
  Davies, 1979
• Arion intermedius
  Arion intermedius
  Arion intermedius is a species of air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Arionidae. This slug is sometimes called by the common name "hedgehog slug" or "hedgehog arion" because when the slug is resting in the contracted state, the tubercles on its back look...
  
  (Normand, 1852)
• Arion occultus
  Arion occultus
  Arion occultus is a species of small air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Arionidae, the roundback slugs.This recently-recognized species is part of the "Arion hortensis group" of species...
  
  Anderson, 2004
• Geomalacus maculosus Allman, 1843

Pristilomatidae

Pristilomatidae

Pristilomatidae is a taxonomic family of air-breathing land snails, terrestrial gastropod mollusks in the superfamily Gastrodontoidea.According to the 2005 taxonomy of the Gastropoda by Bouchet & Rocroi these snails belong to the "limacoid clade", and Vitreinae is a synonym for Pristilomatidae,...

 - terrestrial

• Vitrea contracta
  Vitrea contracta
  Vitrea contracta is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Pristilomatidae.- Distribution :This species occurs in countries and islands including:* Czech Republic* Great Britain* Ireland...
  
  (Westerlund, 1871)
• Vitrea crystallina
  Vitrea crystallina
  Vitrea crystallina is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Pristilomatidae.- Distribution :This species occurs in countries and islands including:* Czech Republic* Great Britain* Ireland...
  
  (O. F. Müller, 1774)

Euconulidae

Euconulidae

Euconulidae is a taxonomic family of minute, air-breathing land snails, terrestrial pulmonate gastropod mollusks or micromollusks. This land snail family is closely allied to the Zonitidae, the glass snails.- Distribution :...

 - terrestrial

• Euconulus c.f. fulvus (O. F. Müller, 1774) = Euconulus fulvus
  Euconulus fulvus
  Euconulus fulvus is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Euconulidae, the hive snails.- Distribution :This species occurs in countries and islands including:* Czech Republic...
  
  
• Euconulus c.f. alderi (J.E. Gray, 1840) = Euconulus alderi
  Euconulus alderi
  Euconulus alderi is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Euconulidae, the hive snails.- Distribution :This species occurs in countries and islands including:* Great Britain* Ireland...
  
  

Gastrodontidae

Gastrodontidae

Gastrodontidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the clade Eupulmonata ....

 - terrestrial

• Zonitoides nitidus
  Zonitoides nitidus
  Zonitoides nitidus is a species of small, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Gastrodontidae.Zonitoides nitidus is the type species of the genus Zonitoides.-Distribution:...
  
  (O. F. Müller, 1774)
• Zonitoides excavatus
  Zonitoides excavatus
  Zonitoides excavatus is a European species of small, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Gastrodontidae.-Distribution:Distribution of Zonitoides excavatus include:...
  
  (Alder, 1830)

Oxychilidae

Oxychilidae

Oxychilidae is a taxonomic family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Gastrodontoidea.- Distribution :...

 - terrestrial

• Oxychilus alliarius
  Oxychilus alliarius
  Oxychilus alliarius, common name the "garlic snail" or "garlic glass-snail", is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Oxychilidae, the glass snails....
  
  (Miller, 1822)
• Oxychilus cellarius
  Oxychilus cellarius
  Oxychilus cellarius is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Oxychilidae, the glass snails.-Distribution and conservation status:...
  
  (O. F. Müller, 1774)
• Oxychilus draparnaudi
  Oxychilus draparnaudi
  Oxychilus draparnaudi is a species of small land snail, a terrestrial pulmonate gastropod mollusk in the family Oxychilidae, the glass snails.-Shell description:...
  
  draparnaudi (Beck, 1837) - introduced
• Oxychilus navarricus
  Oxychilus navarricus
  Oxychilus navarricus, before 2002 known as Oxychilus helveticus , is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Oxychilidae, the glass snails.-Distribution:...
  
  helveticus (Blum, 1881) - introduced
• Aegopinella nitidula
  Aegopinella nitidula
  Aegopinella nitidula is a species of small land snail, a terrestrial pulmonate gastropod mollusk in the family Oxychilidae, the glass snails.Forsyth et al...
  
  (Draparnaud, 1805)
• Aegopinella pura
  Aegopinella pura
  Aegopinella pura is a species of small land snail, a terrestrial pulmonate gastropod mollusk in the family Oxychilidae, the glass snails.- Distribution :This species occurs in countries and islands including:* Czech Republic* Great Britain* Ireland...
  
  (Alder, 1830)
• Nesovitrea hammonis (Ström, 1765) =Perpolita hammonis
  Perpolita hammonis
  Perpolita hammonis is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Oxychilidae. In modern sources usually classified in the genus Nesovitrea.-Distribution:...
  
  

Milacidae

Milacidae

Milacidae is a family of air-breathing, keeled, land slugs. These are shell-less terrestrial gastropod mollusks in the superfamily Parmacelloidea.This family has no subfamilies ....

 - terrestrial

• Milax gagates
  Milax gagates
  Milax gagates, common name the "greenhouse slug" is a species of air-breathing, keeled, land slug, a shell-less terrestrial gastropod mollusk in the family Milacidae.-Description:...
  
  (Draparnaud, 1801)
• Tandonia rustica
  Tandonia rustica
  Tandonia rustica is a species of air-breathing, keeled, land slug, a shell-less terrestrial gastropod mollusk in the family Milacidae.-Distribution:This slug is native to Europe.* Not listed in IUCN red list - not evaluated * Czech Republic...
  
  (Millet, 1843)
• Tandonia budapestensis
  Tandonia budapestensis
  Tandonia budapestensis is a species of air-breathing, keeled, land slug. It is a shell-less terrestrial gastropod mollusks in the family Milacidae.-Description:...
  
  (Hazay, 1881)
• Tandonia sowerbyi
  Tandonia sowerbyi
  Tandonia sowerbyi is a species of air-breathing, keeled, land slug, a shell-less terrestrial gastropod mollusk in the family Milacidae.-Distribution:This slug is native to Europe, possibly originally only to Greece where it is very common...
  
  (A. Férussac, 1823)

Vitrinidae

Vitrinidae

Vitrinidae is a family of small, air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Limacoidea ....

 - terrestrial

• Vitrina pellucida
  Vitrina pellucida
  Vitrina pellucida is species of small land snail, a terrestrial pulmonate gastropod mollusk in the family Vitrinidae, the glass snails.- Distribution :...
  
  (O. F. Müller, 1774)
• Semilimax pyrenaicus
  Semilimax pyrenaicus
  Semilimax pyrenaicus is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Vitrinidae.-Distribution:This species is known to occur in:* Ireland* France-References:* AnimalBase info at:...
  
  (A. Férussac, 1821) - introduced?

Boettgerillidae - terrestrial

• Boettgerilla pallens
  Boettgerilla pallens
  Boettgerilla pallens, common name the worm slug, is a European species of air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Boettgerillidae.- Distribution :...
  
  Simroth, 1912 - introduced

Limacidae

Limacidae

Limacidae, common name the keelback slugs, are a taxonomic family of medium-sized to very large, air-breathing land slugs, terrestrial pulmonate gastropod molluscs in the superfamily Limacoidea.- Distribution :...

 - terrestrial

• Limax maximus Linnaeus, 1758
• Limax cinereoniger
  Limax cinereoniger
  Limax cinereoniger is a species of air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Limacidae, the keelback slugs.-Description:Rarely this slug can grow up to 30 cm long...
  
  Wolf, 1803
• Limacus flavus (Linnaeus, 1758)
• Limax maculatus
  Limax maculatus
  Limax ecarinatus , is a large species of air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Limacidae....
  
  (Kaleniczenko, 1851) - introduced
• Lehmannia marginata
  Lehmannia marginata
  Lehmannia marginata is species of air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Limacidae. Sometimes classified in the genus Limax, the species is distinct in its ecology, and its nearly transparent body. It is a medium-sized species, rarely exceeding 12 cm in...
  
  (O. F. Müller, 1774)
• Lehmannia valentiana
  Lehmannia valentiana
  Lehmannia valentiana is a species of air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Limacidae.- Distribution :This species is known to occur in a number of countries and islands including:...
  
  (A. Férussac, 1822)

Agriolimacidae

Agriolimacidae

Agriolimacidae is a family of small and medium sized land slugs, or shell-less snails, terrestrial pulmonate gastropod mollusks.- Distribution :Distribution of Limacidae is Holarctic, this include: Nearctic, western Palearctic and eastern Palearctic....

 - terrestrial

• Deroceras laeve
  Deroceras laeve
  Deroceras laeve, the marsh slug, is a species of small air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Agriolimacidae.-Distribution:...
  
  (O. F. Müller, 1774)
• Deroceras reticulatum
  Deroceras reticulatum
  Deroceras reticulatum, common names "grey field slug" and "grey garden slug", is a species of small air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Agriolimacidae...
  
  (O. F. Müller, 1774)
• Deroceras panormitanum
  Deroceras panormitanum
  Deroceras panormitanum, previously known as Deroceras caruanae and as Agriolimax caruanae, is a species of air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Agriolimacidae....
  
  (Lessona & Pollonera, 1882) = Deroceras caruanae (Polonera, 1891)

Ferussaciidae

Ferussaciidae

Ferussaciidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Achatinoidea.This family has no subfamilies...

 - terrestrial

• Cecilioides acicula
  Cecilioides acicula
  Cecilioides acicula, common name the "blind snail" or "blind awlsnail", is a species of very small, air-breathing land snail, a pulmonate gastropod mollusk in the family Ferussaciidae.This is a subterranean species.- Description :...
  
  (O. F. Müller, 1774)

Clausiliidae

Clausiliidae

Clausiliidae, common name door snails, are a taxonomic family of small, very elongate, mostly left-handed, air-breathing land snails, sinistral terrestrial pulmonate gastropod mollusks....

 - terrestrial

• Cochlodina laminata
  Cochlodina laminata
  Cochlodina laminata is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Clausiliidae, the door snails.-Distribution:This species occurs in Europe.* Czech Republic* Bulgaria* Netherlands* Poland...
  
  (Montagu, 1803)
• Clausilia bidentata
  Clausilia bidentata
  Clausilia bidentata, the 'Two Toothed Door Snail' is a species of door snails, terrestrial pulmonate gastropod mollusks in the genus Clausilia belonging to the familyClausiliidae, all of which have a clausilium.-Distribution:...
  
  bidentata (Ström, 1765)
• Balea perversa
  Balea perversa
  Balea perversa is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Clausiliidae, the door snails...
  
  (Linnaeus, 1758)
• Balea heydeni
  Balea heydeni
  Balea heydeni is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Clausiliidae.The shell of this species is sinistral, or left-handed in its coiling. The species has long been overlooked because of confusion with Balea perversa...
  
  Von Maltzan, 1881

Testacellidae - terrestrial

• Testacella maugei
  Testacella maugei
  Testacella maugei is a species of air-breathing, carnivorous land slug, a terrestrial gastropod mollusk in the family Testacellidae, the shelled slugs....
  
  A. Férussac, 1822
• Testacella haliotidea Draparnaud, 1801
• Testacella scutulum
  Testacella scutulum
  Testacella scutulum is an air-breathing, carnivorous land slug, a terrestrial gastropod mollusk in the family Testacellidae, the shelled slugs....
  
  Sowerby, 1821

Cochlicellidae

Cochlicellidae

Cochlicellidae is a family of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea ....

 - terrestrial

• Cochlicella acuta
  Cochlicella acuta
  Cochlicella acuta, common name the pointed snail, is a species of small but very high-spired, air-breathing land snail, a pulmonate gastropod mollusk in the family Cochlicellidae....
  
  (O. F. Müller, 1774)

Hygromiidae

Hygromiidae

Hygromiidae is a taxonomic family of small to medium-sized air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.-Anatomy:...

 - terrestrial

• Ashfordia granulata
  Ashfordia granulata
  Ashfordia granulata, common name the "silky snail", is a species of medium-sized air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Hygromiidae, the hairy snails and their allies....
  
  (Alder, 1830)
• Candidula gigaxii
  Candidula gigaxii
  Candidula gigaxii is a species of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Hygromiidae, the hairy snails and their allies.-Distribution:...
  
  (L. Pfeiffer, 1850) - introduced
• Candidula intersecta
  Candidula intersecta
  Candidula intersecta is a species of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Hygromiidae, the hairy snails and their allies.This snail can be a pest species in agricultural settings.-Distribution:...
  
  (Poiret, 1801) - introduced
• Cernuella virgata
  Cernuella virgata
  Cernuella virgata, also known as Helicella virgata, common name, the "vineyard snail", is a species of small, air-breathing land snail, a pulmonate gastropod mollusk in the family Hygromiidae, the hairy snails and their allies....
  
  (Da Costa, 1778) - introduced
• Helicella itala
  Helicella itala
  Helicella itala is a species of medium-sized, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Hygromiidae, the hairy snails and their allies.- Life cycle :The size of the egg is 1.5 mm....
  
  itala (Linnaeus, 1758)
• Hygromia cinctella
  Hygromia cinctella
  Hygromia cinctella, sometimes known as the "girdled snail", is a European species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Hygromiidae.This species creates and uses love darts in its mating behavior....
  
  (Draparnaud, 1801) - introduced
• Trochulus hispidus (Linnaeus, 1758)
• Trochulus striolatus
  Trochulus striolatus
  Trochulus striolatus, also known as Trichia striolata, common name the "strawberry snail," is a species of small air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Hygromiidae....
  
  (Pfeiffer, 1828) - indigenous?
• Zenobiella subrufescens
  Zenobiella subrufescens
  Zenobiella subrufescens is a species of small air-breathing land snail, a pulmonate gastropod mollusk in the family Hygromiidae.Zenobiella subrufescens is the only species in the genus Zenobiella.-Distribution:...
  
  (Miller, 1822)

Helicidae

Helicidae

The Helicidae, sometimes known as the typical snails, are a taxonomic family of small to large, air-breathing, land snails. In other words, they are terrestrial pulmonate gastropod mollusks....

 - terrestrial

• Arianta arbustorum
  Arianta arbustorum
  Arianta arbustorum is a medium-sized species of land snail, sometimes known as the "copse snail", a terrestrial pulmonate gastropod mollusk in the family Helicidae.-Subspecies:Several subspecies are recognized by some authors:...
  
  arbustorum (Linnaeus, 1758)
• Helicigona lapicida
  Helicigona lapicida
  Helicigona lapicida is a species of medium-sized, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Helicidae, the typical snails.-Anatomy:This species of snail makes and uses love darts during mating....
  
  lapicida (Linnaeus, 1758)
• Theba pisana
  Theba pisana
  Theba pisana, common names the white garden snail, the sand hill snail, white Italian snail, the Mediterranean coastal snail, or simply the Mediterranean snail, is an edible species of medium-sized air-breathing land snail, a pulmonate gastropod mollusk in the family Helicidae...
  
  pisana (O. F. Müller, 1774) - introduced
• Cepaea nemoralis nemoralis (Linnaeus, 1758)
• Cepaea hortensis (O. F. Müller, 1774)
• Cornu aspersum aspersum = Helix aspersus (O.F. Müller, 1774) - introduced

Bivalvia

Margaritiferidae

Margaritiferidae

Margaritiferidae is a family of medium-sized freshwater mussels, aquatic bivalve mollusks in the order Unionoida. They are known as freshwater pearl mussels, because they are capable of producing pearls.-Genera within the family Margaritiferidae:...

 - aquatic

• Margaritifera margaritifera (Linnaeus, 1758)

Unionidae

Unionidae

Unionidae is a family of freshwater mussels, the largest in the order Unionoida, the bivalve mollusks sometimes known as river mussels, naiads, or simply as unionids.The range of distribution for this family is world-wide...

  - aquatic

• Anodonta anatina (Linnaeus, 1758)
• Anodonta cygnea (Linnaeus, 1758)

Sphaeriidae

Sphaeriidae

The Sphaeriidae are a family of small to minute freshwater bivalve molluscs, in the order Veneroida. In the USA they are commonly known as the pea clams and the fingernail clams.-Genera:Genera in the family Sphaeriidae include:* Musculium...

  - aquatic

• Sphaerium corneum
  Sphaerium corneum
  Sphaerium corneum, also known as the European fingernailclam, is a very small freshwater clam, an aquatic bivalve mollusk in the family Sphaeriidae, the fingernail clams.-Description:The shell is fairly globular and is up to 9 mm in size...
  
  (Linnaeus, 1758)
• Sphaerium nucleus
  Sphaerium nucleus
  Sphaerium nucleus is a freshwater bivalve of the family Sphaeriidae.-Description:It is a very small bi-valve which may grow up to 8mm in each direction. It is a filter-feeder.-Distribution:Europe, Central Asia.* Austria* Britain and Ireland...
  
  (Studer, 1820)
• Musculium lacustre
  Musculium lacustre
  Musculium lacustre is a species of small freshwater clam, an aquatic bivalve mollusk in the family Sphaeriidae, the fingernail clams and pea clams.-Distribution:...
  
  (O. F. Müller, 1774)
• Pisidium amnicum
  Pisidium amnicum
  Pisidium amnicum is a species of very small freshwater clam. It is sometimes known as the greater European peaclam, an aquatic bivalve in the family Sphaeriidae.-Description:...
  
  (O. F. Müller, 1774)
• Pisidium casertanum
  Pisidium casertanum
  Pisidium casertanum, the pea cockle or pea clam, is a minute freshwater bivalve mollusc of the family Sphaeriidae.- Description :...
  
  (Poli, 1791)
• Pisidium conventus
  Pisidium conventus
  Arctic-alpine Pea Clam, Pisidium conventus is a species of freshwater bivalve from family Sphaeriidae.-Distribution and conservation status:* Not listed in IUCN red list - not evaluated * Germany - endangered...
  
  (Clessin, 1877)
• Pisidium henslowanum
  Pisidium henslowanum
  Pisidium henslowanum is a species of very small freshwater clam or pea clam, an aquatic bivalve mollusc in the family Sphaeriidae.-Distribution:It's native distribution is Holarctic.* Czech Republic - in Bohemia, in Moravia, least concern...
  
  (Sheppard, 1823)
• Pisidium hibernicum
  Pisidium hibernicum
  Pisidium hibernicum is a species of freshwater bivalve from family Sphaeriidae.-Distribution:It's native distribution is Palearctic.* Czech Republic - endangered , endangered in Bohemia , critically endangered in Moravia* Slovakia...
  
  Westerlund, 1894
• Pisidium lilljeborgii
  Pisidium lilljeborgii
  Pisidium lilljeborgii is a species of freshwater bivalve from family Sphaeriidae.-Distribution and conservation status:* Not listed in IUCN red list - not evaluated * Germany - high endangered...
  
  (Clessin, 1886)
• Pisidium milium
  Pisidium milium
  Pisidium milium is a species of very small freshwater bivalve in the family Sphaeriidae, the fingernail clams and pea clams.-Distribution :The native distribution of this species is Holarctic.* Czech Republic - in Bohemia, in Moravia, vulnerable...
  
  Held, 1836

• Pisidium moitessierianum
  Pisidium moitessierianum
  Pisidium moitessierianum is a species of minute freshwater clam. It is an aquatic bivalve mollusc in the family Sphaeriidae.- Description :...
  
  Paladilhe, 1866
• Pisidium nitidum
  Pisidium nitidum
  Pisidium nitidum or the "shining pea clam" is a species of minute freshwater clam, an aquatic bivalve mollusc in the family Sphaeriidae, the pea clams and fingernail clams.The adult size of the shell of this species is 3 mm.-Distribution:...
  
  Jenyns, 1832
• Pisidium obtusale
  Pisidium obtusale
  Pisidium obtusale is a species of freshwater bivalve from family Sphaeriidae.-Distribution:It's native distribution is Holarctic.* Czech Republic - in Bohemia, in Moravia, near threatened * Germany -...
  
  (Lamarck, 1818)
• Pisidium personatum
  Pisidium personatum
  Pisidium personatum is a species of freshwater bivalve from the Family Sphaeriidae.-Distribution:It's native distribution is European-Siberian.* Czech Republic - in Bohemia, in Moravia, least concern...
  
  Malm, 1855
• Pisidium pulchellum
  Pisidium pulchellum
  Pisidium pulchellum is a minute species of pea clam, a freshwater bivalve in the family Sphaeriidae.-Distribution and conservation status:* Not listed in IUCN red list - not evaluated...
  
  (Jenyns, 1832)
• Pisidium pseudosphaerium
  Pisidium pseudosphaerium
  Pisidium pseudosphaerium is a species of freshwater bivalve from family Sphaeriidae.-Distribution:It's native distribution is central-European and western-European.* Czech Republic - in Bohemia, in Moravia, critically endangered...
  
  Favre, 1927
• Pisidium subtruncatum
  Pisidium subtruncatum
  Pisidium subtruncatum is a species of pill clam, a minute freshwater bivalve in the family Sphaeriidae.-Distribution:Its native distribution is Holarctic.* Czech Republic - in Bohemia, in Moravia, least concern...
  
  Malm, 1855

Dreissenidae

Dreissenidae

The Dreissenidae are a family of small freshwater mussels, aquatic bivalve mollusks. They attach themselves to stones or to any other hard surface using a byssus.-Genera:Genera within the family Dreissenidae include:* Congeria...

  - aquatic

• Dreissena polymorpha (Pallas, 1771) - introduced

List of "hothouse alien" species

These freshwater species are not truly part of the fauna, because they do not live in the wild. They are tropical, and thus are incapable of surviving in the wild in Ireland; instead they have established themselves as uninvited inhabitants of aquaria

Aquarium

An aquarium is a vivarium consisting of at least one transparent side in which water-dwelling plants or animals are kept. Fishkeepers use aquaria to keep fish, invertebrates, amphibians, marine mammals, turtles, and aquatic plants...

 within greenhouses, and similar artificially-heated aquatic habitats.

Lymnaeidae

Lymnaeidae

Lymnaeidae is a taxonomic family of small to large air-breathing freshwater snails, aquatic pulmonate gastropod mollusks, that belong to the clade Hygrophila....

  - aquatic

• Radix rubiginosa
  Radix rubiginosa
  Radix rubiginosa is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod in the family Lymnaeidae, the pond snails.This species is sometimes treated as a subspecies of Radix auricularia.-Distribution:...
  
  (Michelin, 1831), native to Indo-China and Indonesia

Planorbidae

Planorbidae

Planorbidae, common name the ramshorn snails or ram's horn snails, is a family of air-breathing freshwater snails, aquatic pulmonate gastropod mollusks....

  - aquatic

• Planorbella duryi
  Planorbella duryi
  Planorbella duryi, common name the Seminole rams-horn, is a species of air-breathing freshwater snail, a pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.-Distribution:This species of snail is endemic to Florida, USA....
  
  (Wetherby, 1879)

See also

• List of non-marine molluscs of Great Britain
• List of non-marine molluscs of the Netherlands

Further reading

• Scharff, R. F. 1896. The slugs of Ireland. London.

External links

• An annotated list of the non-marine molluscs of Britain and Ireland
• MolluscIreland
• Invertebrate Ireland Online Partially illustrated checklist
• Northern Ireland's Priority Species & Species of Conservation Concern. Molluscs.
• Conchological Society Identification help.
• BDH Taylor, John William, Roebuck, William Denison and Ashford, Charles, 1829-1894 Monograph of the land & freshwater Mollusca of the British islesLeeds, Taylor Brothers Parts 8 -24.
• Irish Biodiversity Maps - including non-marine molluscs