膀胱螺屬

膀胱螺屬（学名：），又名囊螺屬，屬软体动物门腹足纲異鰓類泛有肺類喜溼螺類支序的膀胱螺科，是一種細小的淡水螺，能在空氣呼吸。本屬的學名「」在[古希腦語]]的意思就是「風箱」。

本屬物種以藻類、矽藻及碎屑為食。

物種
現存物種：
尖膀胱螺（Physa acuta Draparnaud, 1805）
 Physa ancillaria (Say, 1825) - Pumpkin Physa
 Physa carolinae Wethington, Wise & Dillon, 2009
 Physa concolor
泉膀胱螺（Physa fontinalis (Linnaeus, 1758)）：模式種
 Physa hordacea (I. Lea, 1864)
 Physa jennessi Dall, 1919
 Physa lordi (Baird, 1863)
 Physa marmorata Guilding, 1828 - synonyms: Physa mosambiquensis Clessin, 1886 and Physa waterloti
 Physa megalochlamys Taylor, 1988
  Physa mezzalirai Ghilardi, Carbonaro & Simone, 2011 - fossil from Brazil
 Physa natricina Taylor, 1988
 Physa nuttalli
 Physa propingua (Tryon, 1865)
 Physa pumilia Conrad, 1834
 Physa siberica Westerlund, 1876
 Physa skinneri Taylor, 1954
 Physa vernalis Taylor et Jokinen, 1984
 Physa sp., Lake Winnipeg Physa, lives in Manitoba in Canada. It was classified as endangered by COSEWIC. COSEWIC recommendation has been forwarded to the Minister of the Environment of Canada and a decision for listing at the List of Wildlife Species at Risk of the Canadian Species at Risk Act was pending in 2005.

同種異名：
 Physa acuta Draparnaud, 1805, Physa heterostropha (Say, 1817), Physa integra (Haldeman, 1841) and Physa natricina Taylor, 1988 are synonyms of Physella acuta (Draparnaud, 1805)
 Physa columbiana (Hemphill, 1890) is a synonym for Physella columbiana (Hemphill, 1890)
 Physa gyrina (Say, 1821) is a synonym for Physella gyrina'' (Say, 1821)

化石物種：
  Physa aridi Mezzalira, 1974 - fossil from Brazil
  金刚口滴螺（Physa jingangkouensis''）

参考文献

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