''Rissopsis'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of very small, somewhat

amphibious Amphibious means able to use either land or water. In particular it may refer to: Animals * Amphibian, a vertebrate animal of the class Amphibia (many of which live on land and breed in water) * Amphibious caterpillar * Amphibious fish, a fish ...

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 that have a

gill A gill () is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide. The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are ...

and an operculum, semi- terrestrial

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 ...

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 or

micromollusk A micromollusk is a shelled mollusk which is extremely small, even at full adult size. The word is usually, but not exclusively, applied to marine mollusks, although in addition, numerous species of land snails and freshwater mollusks also ...

in the

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Iravadiidae Iravadiidae is a family of minute sea snails, marine gastropod molluscs in the superfamily Truncatelloidea and the clade Littorinimorpha Littorinimorpha is a large order of snails, gastropods, consisting primarily of sea snails (marine sp ...

.Bouchet, P.; Gofas, S. (2012). Rissopsis Garrett, 1873. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=535772 on 2012-08-14

Species

Species within the genus ''Rissopsis'' include: * '' Rissopsis prolongata'' (Turton, 1932) * '' Rissopsis tuba'' Kilburn, 1977 * '' Rissopsis typica'' Garrett, 1873 ;Species brought into synonymy: * ''Rissopsis brevis'' May, 1919: synonym of '' Austrorissopsis consobrina'' (Tate & May, 1900) * ''Rissopsis expansa'' Powell, 1930: synonym of '' Eusetia expansa'' (Powell, 1930) * ''Rissopsis ligula'' Kilburn, 1975: synonym of ''Rissopsis prolongata'' (Turton, 1932)

References

Ponder W. F. (1984) ''A review of the genera of the Iravadiidae (Gastropoda: Rissoacea) with an assessment of the relationships of the family''. Malacologia 25(1): 21-71. page(s): 51-52
Iravadiidae {{Caenogastropoda-stub