Ferrissia

Ferrissia is a genus of small, air-breathing freshwater limpets, aquatic gastropod mollusks in the family Planorbidae.

==Species== Species within the genus Ferrissia include: Ferrissia baconi (Bourguignat, 1853) Ferrissia beaui (Bourguignat, 1853) - Beau's Stream Limpet Ferrissia burnupi (Walker, 1912) Ferrissia cawstoni Walker, 1924 Ferrissia ceylanica Benson, 1864 Ferrissia chudeaui Germain, 1917 Ferrissia clifdeni Connolly, 1939 Ferrissia connollyi (Walker, 1912) † Ferrissia crenellata Harzhauser & Neubauer in Harzhauser et al., 2012 † Ferrissia deperdita (Desmarest, 1814) † Ferrissia dimici (Brusina, 1902) Ferrissia dohrnianus (Clessin, 1882) Ferrissia eburnensis Binder, 1957 Ferrissia farquhari (Walker, 1924) Ferrissia fontinalis (Walker, 1912) Ferrissia fragilis (Tryon, 1863) - synonyms: Ferrissia clessiniana (Jickeli, 1882), Ferrissia wautieri (Mirolli, 1960) - Fragile Ancylid Ferrissia gentilis Lanzer, 1991 † Ferrissia illyrica (Neumayr, 1880) Ferrissia irrorata (Guilding, 1828) Ferrissia isseli (Bourguignat, 1866) Ferrissia junodi Connolly, 1925 Ferrissia kavirondica (Mandahl-Barth, 1954) Ferrissia lacustris Walker, 1924 Ferrissia leonensis Connolly, 1928 Ferrissia lhotelleriei Walker, 1914 - dubious species Ferrissia mcneili Walker, 1925 - hood ancylid Ferrissia modesta Crosse, 1880 Ferrissia natalensis Walker, 1924 Ferrissia neozelanica (Suter, 1905) † Ferrissia neumayri (Fontannes, 1881) Ferrissia pallaryi Walker, 1914 - dubious species Ferrissia parallela (Haldeman) - oblong ancylid or Ferrissia parallelus Ferrissia petterdi (Johnston, 1879) † Ferrissia pontileviensis (Morgan, 1920) Ferrissia siamensis Brandt, 1974 Ferrissia rivularis (Say, 1817) - the type species Ferrissia tasmanica (Woods, 1876) Ferrissia tanganyicensis (Smith, 1906) Ferrissia tenuis (Bourguignat, 1862) Ferrissia toroensis (Mandahl-Barth, 1954) † Ferrissia truci Wautier, 1975 Ferrissia verruca (Benson, 1855) Ferrissia victoriensis (Walker, 1912) Ferrissia viola (Annandale & Prashad, 1921) Ferrissia walkeri (Pilsbry & Ferriss, 1907) † Ferrissia wittmanni (Schlickum, 1964) Ferrissia zambesiensis (Walker, 1912) Ferrissia zambiensis Mandahl-Barth, 1968