Cryptomastix
Encyclopedia
Cryptomastix is a genus
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of air-breathing 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, 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...

 pulmonate gastropod mollusks in the family Polygyridae
Polygyridae
Polygyridae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.The Polygyridae make up a significant proportion of the land snail fauna of eastern North America, and are also found in western North America, northern Central America, and...

.

These snails cannot be differentiated from related polygyrids solely on the basis of their shell characters. Instead, the details of the male anatomy must be examined.

Distribution

This genus of snails is restricted to the northwestern United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

, and to adjacent areas of British Columbia
British Columbia
British Columbia is the westernmost of Canada's provinces and is known for its natural beauty, as reflected in its Latin motto, Splendor sine occasu . Its name was chosen by Queen Victoria in 1858...

, Canada
Canada
Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

.

Species

This genus includes the following species:
  • Cryptomastix devia
    Cryptomastix devia
    Cryptomastix devia, common name the Puget Oregonian snail, is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Polygyridae.- Distribution and conservation status :...

    (Gould, 1846); Puget Oregonian
  • Cryptomastix germana (Gould, 1851); Pygmy Oregonian
    • Cryptomastix germana vancouverinsulae (Pilsbry and Cooke, 1922)
  • Cryptomastix harfordiana (W. G. Binney; 1886); Salmon Oregonian
  • Cryptomastix hendersoni (Pilsbry, 1928); Columbia Oregonian
  • Cryptomastix magnidentata (Pilsbry, 1940); Mission Creek Oregonian
  • Cryptomastix mullani
    Cryptomastix mullani
    Cryptomastix mullani, is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Polygyridae.- Subspecies :*Cryptomastix mullani blandi *Cryptomastix mullani clappi...

    (Bland and J. G. Cooper, 1861); Coeur d'Alene Oregonian
    • Cryptomastix mullani blandi (Hemphill, 1892)
    • Cryptomastix mullani clappi (Hemphill, 1897)
    • Cryptomastix mullani hemphilli (W. G. Binney, 1886)
    • Cryptomastix mullani latilabris (Pilsbry, 1940)
    • Cryptomastix mullani olneyae (Pilsbry, 1891)
    • Cryptomastix mullani tuckeri (Pilsbry and Henderson, 1930)
  • Cryptomastix sanburni (W. G. Binney, 1886); Kingston Oregonian
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