''Hyala'' 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 n ...

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 snails 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 ar ...

and an operculum, semi-

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 es ...

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 ...

s in the

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

Iravadiidae Iravadiidae is a family of minute sea snails, marine gastropod molluscs in the superfamily Truncatelloidea and the clade Littorinimorpha.MolluscaBase (2019). MolluscaBase. Iravadiidae Thiele, 1928. Accessed through: World Register of Marine ...

.Bouchet, P.; Gofas, S. (2012). Hyala H. Adams & A. Adams, 1852. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=138083 on 2012-08-14 They are subsurface deposit feeders.

Species

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

Hyala adamsi ''Hyala'' is a genus of very small, somewhat amphibious land snails that have a gill and an operculum, semi-terrestrial gastropod mollusks or micromollusks in the family Iravadiidae Iravadiidae is a family of minute sea snails, marine ...

'' Golikov & Kussakin in Golikov & Scarlato, 1971 * ''

Hyala vitrea ''Hyala vitrea'' is a species of minute sea snail, a marine (ocean), marine gastropod mollusk or micromollusk in the family (biology), family Iravadiidae. Previously, ''Hyala vitrea'' was considered as a species of ''Onoba (gastropod), Onoba'' ( ...

'' ( Montagu, 1803) ;Species brought into synonymy: * ''Hyala mediterranea'' F. Nordsieck, 1972: synonym of ''Hyala vitrea'' ( Montagu, 1803)

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
* Vaught, K.C. (1989). ''A classification of the living Mollusca''. American Malacologists: Melbourne, FL (USA). . XII, 195 pp. * Gofas, S.; Le Renard, J.; Bouchet, P. (2001). Mollusca, in: Costello, M.J. et al. (Ed.) (2001). ''European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification.'' Collection Patrimoines Naturels, 50: pp. 180–213 Iravadiidae {{Caenogastropoda-stub