''Helisoma'' 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 freshwater air-breathing

snail A snail is, in loose terms, a shelled gastropod. The name is most often applied to land snails, terrestrial pulmonate gastropod molluscs. However, the common name ''snail'' is also used for most of the members of the molluscan class G ...

, a pulmonate 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 ...

in the family

Planorbidae Planorbidae, common name the ramshorn snails or ram's horn snails, is a family of air-breathing freshwater snails, aquatic pulmonate gastropod molluscs. Unlike most molluscs, the blood of ram's horn snails contains iron-based hemoglobin instea ...

, the ram's horn snails. Synonym: * '' Carinifex'' Binney, 1864 ''Helisoma'' snails are an intermediate host of '' Megalodiscus temperatus''.

Species

Species within the genus ''Helisoma'' include: * '' Helisoma anceps'', sometimes known as '' Planorbella anceps'' * ''Helisoma campanulatum'' (Say, 1821) : synonym of '' Planorbella campanulata'' (Say, 1821)

References

Planorbidae {{Planorbidae-stub