''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 nom ...

of very small, somewhat amphibious 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 are ...

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 e ...

s or micromollusks 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 Littorinimorpha is a large order of snails, gastropods, consisting primarily of sea snails (marine sp ...

.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'' Golikov & Kussakin in Golikov & Scarlato, 1971 * '' Hyala vitrea'' ( 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