''Opisthosiphon'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

of land snails with an operculum,

terrestrial Terrestrial refers to things related to land or the planet Earth. Terrestrial may also refer to: * Terrestrial animal, an animal that lives on land opposed to living in water, or sometimes an animal that lives on or near the ground, as opposed to ...

gastropod

mollusk 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 e ...

s in the family

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. This famil ...

."Mollusca"
. Diversidad Biológica Cubana, accessed 23 March 2011.

Description

The genus ''Opisthosiphon'' has been described by American malacologist

William Healey Dall William Healey Dall (August 21, 1845 – March 27, 1927) was an American naturalist, a prominent malacologist, and one of the earliest scientific explorers of interior Alaska. He described many mollusks of the Pacific Northwest of America, and ...

in 1905. Dall's

type description A species description is a formal description of a newly discovered species, usually in the form of a scientific paper. Its purpose is to give a clear description of a new species of organism and explain how it differs from species that have be ...

reads as follows:

Species

Species within the genus ''Opisthosiphon'' include: * '' Opisthosiphon aguilerianum'' (Arango, 1876) * '' Opisthosiphon alleni'' Bartsch, 1946 * '' Opisthosiphon andrewsi'' Welch, 1929 * '' Opisthosiphon androsensis'' Pilsbry, 1930 * '' Opisthosiphon apertum'' Torre & Henderson, 1920 * '' Opisthosiphon bacillum'' Torre & Bartsch, 1941 * '' Opisthosiphon bahamense'' (Sh.) - type species, as ''Chondropoma bahamense'' Sh. * '' Opisthosiphon banaoense'' Torre & Henderson, 1921 * '' Opisthosiphon bermudezi'' Torre & Bartsch, 1941 * '' Opisthosiphon berryi'' Clapp, 1919 * '' Opisthosiphon bioscai'' Torre & Henderson, 1920 * '' Opisthosiphon caguanense'' Torre & Bartsch, 1941 * '' Opisthosiphon caroli'' Aguayo, 1932 * '' Opisthosiphon claudens'' Torre & Bartsch, 1941 * '' Opisthosiphon cucullatum'' Torre & Bartsch, 1941 * '' Opisthosiphon cunaguae'' Welch, 1929 * '' Opisthosiphon detectum'' Torre & Henderson, 1920 * '' Opisthosiphon deviatum'' Torre & Bartsch, 1941 * '' Opisthosiphon echinatum'' (Gundlach in Pfeiffer, 1857) * '' Opisthosiphon evanidum'' Torre & Henderson, 1921 * '' Opisthosiphon greenfieldi'' Torre & Bartsch, 1941 * '' Opisthosiphon guanajaense'' Torre & Bartsch, 1941 * '' Opisthosiphon insularum'' Torre & Bartsch, 1941 * '' Opisthosiphon judasense'' Torre & Henderson, 1920 * '' Opisthosiphon lamellosum'' Torre & Bartsch, 1941 * '' Opisthosiphon litorale'' Torre & Bartsch, 1941 * '' Opisthosiphon manatiense'' Torre & Bartsch, 1941 * '' Opisthosiphon mayori'' Bartsch, 1946 * '' Opisthosiphon millsi'' Bartsch, 1946 * '' Opisthosiphon moreletianum'' (Petit, 1850) * '' Opisthosiphon nicholasi'' Bartsch, 1946 * '' Opisthosiphon obtectum'' Torre & Henderson, 1920 * '' Opisthosiphon obturatum'' Torre & Henderson, 1920 * '' Opisthosiphon palmeri'' Torre & Bartsch, 1941 * '' Opisthosiphon paredonense'' Torre & Henderson, 1920 * '' Opisthosiphon plateroense'' Torre & Bartsch, 1941 * '' Opisthosiphon plicatum'' Torre & Bartsch, 1941 * '' Opisthosiphon poeyi'' Torre & Bartsch, 1941 * '' Opisthosiphon prominulum'' Torre & Bartsch, 1941 * '' Opisthosiphon protactum'' Torre & Henderson, 1920 * '' Opisthosiphon pupoides'' (Morelet, 1849) * '' Opisthosiphon quesadai'' Aguayo, 1932 * '' Opisthosiphon quinti'' Torre & Bartsch, 1941 * '' Opisthosiphon sabinalense'' Sánchez Roig, 1949 * '' Opisthosiphon sainzi'' Aguayo, 1934 * '' Opisthosiphon salustii'' Torre & Henderson, 1920 * '' Opisthosiphon sanchezi'' Torre & Bartsch, 1941 * '' Opisthosiphon sculptum'' (Gundlach in Pfeiffer, 1857) * '' Opisthosiphon sosai'' Torre & Bartsch, 1941 * '' Opisthosiphon subobtectum'' Torre & Bartsch, 1941 * '' Opisthosiphon subobturatum'' Torre & Henderson, 1920 * '' Opisthosiphon tersum'' Torre & Henderson, 1921 * '' Opisthosiphon thesaurus'' Watters, 2019 * '' Opisthosiphon torrei'' Welch, 1929 * '' Opisthosiphon turiguanoense'' Torre & Bartsch, 1941 * '' Opistosiphon conicus'' Aguayo & Sánchez Roig, 1949

References

This article incorporates public domain text from the reference * Dall, W.H. (1905). An arrangement of the American Cyclostomatidae, with a revision of the nomenclature. Proceedings of the Malacological Society of London, 6(4): 208-210. * Bank, R. A. (2017). Classification of the Recent terrestrial Gastropoda of the World. Last update: July 16th, 2017. Pomatiidae Taxa named by William Healey Dall {{Pomatiidae-stub