Tomigerus 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 tropical land snail

Land snail

A land snail is any of the many species of snail that live on land, as opposed to those that live in salt water and fresh water. Land snails are terrestrial gastropod mollusks that have shells, It is not always an easy matter to say which species are terrestrial, because some are more or less...

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 tribe Odontostomini within the subfamily Bulimulinae, in the family Orthalicidae

Orthalicidae

Orthalicidae are a family of tropical air-breathing land snails, terrestrial pulmonate gastropod mollusks are classified in the informal group Sigmurethra of the clade Stylommatophora...

.

Species

This genus contains the following species:

• Tomigerus clausus
  Tomigerus clausus
  Tomigerus clausus is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Orthalicidae.- Anatomy :Anatomy of Tomigerus clausus was examined by Harold Heath in 1914....
  
  Spix, 1827
• Tomigerus corrugatus Ihering, 1905
• Tomigerus esamianus Salgado & Coelho, 1990
• Tomigerus laevis Ihering, 1905
• Tomigerus matthewsi Salgado & Leme, 1991
• Tomigerus pilsbryi Baker, 1914
• Tomigerus rochai Ihering, 1905

synonyms:

• Digerus gibberulus (Burrow, 1815), synonym: Tomigerus gibberulus
  Tomigerus gibberulus
  †Tomigerus gibberulus was a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Orthalicidae.This species was endemic to Brazil. It is now extinct....
  
  - extinct
• Biotocus turbinatus (Pfeiffer, 1845), synonym: Tomigerus turbinatus
  Tomigerus turbinatus
  Tomigerus turbinatus was a species of gastropod in the family Orthalicidae. It was endemic to Brazil....
  
  - extinct

How the shell is carried

It is evident from several features of the shell and internal organization that the shell in this genus is carried with its principal axis transverse to the longitudinal axis of the foot; that is, the spire is directed to the right. The flattened surface of the outer whorl thus rests upon the dorsal surface of the foot or upon the substratum when the animal is in a state of aestivation, a position which they had assumed in both instances.