Caspia is a genus of marine snails, brackish water snails and freshwater snails with a gill and an operculum, an aquatic gastropod mollusk in the family Hydrobiidae. Caspia is the type genus of the Caspiidae, that is a synonym of Pyrgulinae. Species Species within the genus Caspia include: Caspia baerii Clessin & W. Dybowski in W. Dybowski, 1888 - type species, marine Caspia brotzkajae Starobogatov in Anistratenko & Prisjazhnjuk, 1992 - marine Caspia gaillardi (Tadjalli-Pour, 1977) - marine Caspia gmelinii Clessin & W. Dybowski in W. Dybowski, 1888 - marine Caspia knipowitchi Makarov, 1938 - marine and brackish Caspia logvinenkoi (Golikov & Starobogatov, 1966) - freshwater Caspia makarovi (Golikov & Starobogatov, 1966) - freshwater and brackish Caspia pallasii Clessin & W. Dybowski, 1887 Caspia stanislavi Alexenko & Starobogatov, 1987 - freshwater and brackish Caspia valkanovi (Golikov & Starobogatov, 1966) Species brought into synonymy Caspia issykkulensis Clessin, 1894: synonym of Pseudocaspia issykkulensis (Clessin, 1894) References Hydrobiidae