Cochlostoma 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 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 with an operculum

Operculum (gastropod)

The operculum, meaning little lid, is a corneous or calcareous anatomical structure which exists in many groups of sea snails and freshwater snails, and also in a few groups of land snails...

, 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...

 gastropod mollusks in the family Diplommatinidae

Diplommatinidae

Diplommatinidae is a family of small land snails with an operculum, terrestrial gastropod mollusks in the superfamily Cyclophoridae.-Genera:*Subfamily Diplommatininae L...

.

Description

Mantle caves work as pulmones. The operculum

Operculum (gastropod)

The operculum, meaning little lid, is a corneous or calcareous anatomical structure which exists in many groups of sea snails and freshwater snails, and also in a few groups of land snails...

 is horny. The shell has several whorls. The penis is above right feeler. Sexual dimorphism

Sexual dimorphism

Sexual dimorphism is a phenotypic difference between males and females of the same species. Examples of such differences include differences in morphology, ornamentation, and behavior.-Examples:-Ornamentation / coloration:...

 is often recognisable at the shell.

Ecology

All species are confined to limestone habitats. They are feeding on dead plants and microflora. Female lays big eggs, offspring hatches after 3–6 weeks.

Species

The genus Cochlostoma contains over 260 species and subspecies, including:

subgenus Cochlostoma

• Cochlostoma septemspirale
  Cochlostoma septemspirale
  Cochlostoma septemspirale is a species of a land snail with an operculum, a terrestrial gastropod mollusk in the family Diplommatinidae.- Distribution :...
  
  (Razoumowsky, 1789)

subgenus Obscurella

• Cochlostoma salomoni
  Cochlostoma salomoni
  Cochlostoma salomoni is an extinct species of land snail with an operculum, a terrestrial gastropod mollusk in the family Diplommatinidae....
  
  Geyer, 1914

subgenus ?

• Cochlostoma canestrinii
  Cochlostoma canestrinii
  Cochlostoma canestrinii is a species of small land snail with an operculum, a terrestrial gastropod mollusk in the family Diplommatinidae.-Distribution and habitat:This species is endemic to Italy. It lives in rocky limestone areas....
  
  (Adami, 1876)
• Cochlostoma roseoli
• Cochlostoma montanum
• Cochlostoma philippianum