费拉螺属

费拉螺属（學名：**'）是一類細小、會呼吸空氣的淡水螺的属，屬於腹足纲扁蜷科。外觀類似笠螺，所以有時稱作淡水笠螺，但在分類上不算是真正的笠螺。

分佈
本物種原來只分佈於北美洲，但近年在香港及太湖的淡水水域都有發現本屬物種的報告。

物種
本屬包括下列各物種：

• 培根氏費拉螺 Ferrissia baconi (Bourguignat, 1853)：香港的外來物種。
• 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)
• *' (Tryon, 1863) - synonyms: Ferrissia clessiniana (Jickeli, 1882), Ferrissia wautieri* (Mirolli, 1960) - Fragile Ancylid
• **' Lanzer, 1991
• † Ferrissia illyrica (Neumayr, 1880)
• Ferrissia irrorata (Guilding, 1828)
• **' (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
• **' ：hood ancylid
• Ferrissia modesta Crosse, 1880
• Ferrissia natalensis Walker, 1924
• **' (Suter, 1905)
• † Ferrissia neumayri (Fontannes, 1881)
• Ferrissia pallaryi Walker, 1914 - dubious species
• ' (Haldeman) - oblong ancylid or '
• Ferrissia petterdi (Johnston, 1879)
• † Ferrissia pontileviensis (Morgan, 1920)
• Ferrissia siamensis Brandt, 1974
• **' ：模式種
• Ferrissia tasmanica (Woods, 1876)
• **' (Smith, 1906)
• **' (Bourguignat, 1862)
• Ferrissia toroensis (Mandahl-Barth, 1954)
• † Ferrissia truci Wautier, 1975
• Ferrissia verruca (Benson, 1855)
• Ferrissia victoriensis (Walker, 1912)
• Ferrissia viola (Annandale & Prashad, 1921)
• **' (Pilsbry & Ferriss, 1907)
• † Ferrissia wittmanni (Schlickum, 1964)
• Ferrissia zambesiensis (Walker, 1912)
• Ferrissia zambiensis Mandahl-Barth, 1968

Many specific names need revision, for example 11 species of Ferrissia in southern Africa.
;Species brought into synonymy:

• † Ferrissia senckenbergiana (Boettger, 1877): synonym of † Ferrissia deperdita (Desmarest, 1814)
• Ferrissia wautieri (Mirolli, 1960): synonym of Ferrissia fragilis (Tryon, 1836)

參考文獻
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外部連結