''Xolotrema'' is a genus (or subgenus under ''

Triodopsis ''Triodopsis'' is a genus of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Polygyridae. Species The following species are recognised in the genus ''Triodopsis'': *'' Triodopsis alabamensis'' *'' Triodopsis a ...

'') of air-breathing

land snail A land snail is any of the numerous species of snail that live on land, as opposed to the sea snails and freshwater snails. ''Land snail'' is the common name for terrestrial gastropod mollusks that have shells (those without shells are known as ...

s, terrestrial

pulmonate Pulmonata or pulmonates, is an informal group (previously an order, and before that a subclass) of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group includ ...

gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. T ...

mollusc Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is esti ...

s in the family Polygyridae.

Shell description

Pilsbry (1940)Pilsbry, Henry A. (1940). Land Mollusca of North America (North of Mexico). Acad. Nat. Sci. Philadelphia, Monograph 3, vol. 1(2): 823. characterized the shell of ''Xolotrema'' (which he considered to be a subgenus) thus: "''Triodopses'', in which the inner margin of the basal lip has a long bladelike lamella, terminating at a notch where it joins the outer arc of the lip; the embryonic whorls are covered with close retractive radial striae (subobsolete in ''T. fosteri'')."

Species

Species within the genus ''Xolotrema'' include: * ''

Xolotrema carolinensis ''Xolotrema'' is a genus (or subgenus under ''Triodopsis'') of air-breathing land snails, terrestrial animal, terrestrial pulmonate gastropod molluscs in the family Polygyridae. Shell description Pilsbry (1940)Pilsbry, Henry A. (1940). Land Moll ...

'' * ''

Xolotrema fosteri ''Xolotrema'' is a genus (or subgenus under ''Triodopsis'') of air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Polygyridae. Shell description Pilsbry (1940)Pilsbry, Henry A. (1940). Land Mollusca of North Ame ...

'' * ''

Xolotrema notata ''Xolotrema notata'' is a species of air-breathing land snail, a terrestrial pulmonate gastropod The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called G ...

'' * ''

Xolotrema obstricta ''Xolotrema'' is a genus (or subgenus under ''Triodopsis'') of air-breathing land snails, terrestrial pulmonate gastropod molluscs in the family Polygyridae. Shell description Pilsbry (1940)Pilsbry, Henry A. (1940). Land Mollusca of North Ame ...

References

Polygyridae Gastropod genera {{Polygyridae-stub