Ferrissia
Ferrissia is a genus of small, air-breathing freshwater limpets, aquatic gastropod mollusks in the family Planorbidae, the ram's horn snails and their allies.
Species
Species within the genus Ferrissia include:Ferrissia baconi Ferrissia beaui - Beau's Stream LimpetFerrissia burnupi Ferrissia cawstoni Walker, 1924Ferrissia ceylanica Benson, 1864Ferrissia chudeaui Germain, 1917Ferrissia clifdeni Connolly, 1939Ferrissia connollyi- † Ferrissia crenellata Harzhauser & Neubauer in Harzhauser et al., 2012
- † Ferrissia deperdita
- † Ferrissia dimici Ferrissia dohrnianus Ferrissia eburnensis Binder, 1957Ferrissia farquhari Ferrissia fontinalis Ferrissia fragilis - synonyms: Ferrissia clessiniana, Ferrissia wautieri - Fragile AncylidFerrissia gentilis Lanzer, 1991
- † Ferrissia illyrica Ferrissia irrorata Ferrissia isseli Ferrissia junodi Connolly, 1925Ferrissia kavirondica Ferrissia lacustris Walker, 1924Ferrissia leonensis Connolly, 1928Ferrissia lhotelleriei Walker, 1914 - dubious speciesFerrissia mcneili Walker, 1925 - hood ancylidFerrissia modesta Crosse, 1880Ferrissia natalensis Walker, 1924Ferrissia neozelanica
- † Ferrissia neumayri Ferrissia pallaryi Walker, 1914 - dubious speciesFerrissia parallela - oblong ancylid or Ferrissia parallelusFerrissia petterdi
- † Ferrissia pontileviensis Ferrissia siamensis Brandt, 1974Ferrissia rivularis - the type speciesFerrissia tasmanica Ferrissia tanganyicensis Ferrissia tenuis Ferrissia toroensis
- † Ferrissia truci Wautier, 1975 Ferrissia verruca Ferrissia victoriensis Ferrissia viola Ferrissia walkeri
- † Ferrissia wittmanni Ferrissia zambesiensis Ferrissia zambiensis Mandahl-Barth, 1968
;Species brought into synonymy:
- † Ferrissia senckenbergiana : synonym of † Ferrissia deperdita Ferrissia wautieri : synonym of Ferrissia fragilis Ferrissia clessiniana : synonym of ''Pettancylus clessiniana''