Belgrandiella bumasta H. Schütt, 1960 Yugoslavia
Islamia bunarbasa (H. Schütt, 1964) Turkey
Falsibelgrandiella bunarica P. Radoman, 1973 Turkey
Austropyrgus bungoniensis A. Clark, W.B. Miller& W.F. Ponder, 2003 Australia, Shoalhaven
Austropyrgus bunyaensis W.B. Miller, W.F. Ponder& K.B. Clark, 1999 Australia, Nanango
Islamia burdurica Yildirim, Çaglan Kaya, Gürlek& Bahadir Koca, 2017
Islamia burduricus Yildirim, Çaglan Kaya, Gürlek& Bahadir Koca, 2017
Belgrandiella bureschi A.M. Angelov, 1976 Bulgaria
Bythiospeum bureschi (A.J. Wagner, 1928) Bulgaria, Stara Planina Mount
Prososthenia burgersteini (FOSSIL) P.S. Pavlovic, 1931 †
Victodrobia burni W.F. Ponder & K.B. Clark,1993 Australia, Latrobe Bal
Pseudamnicola buzoiensis (FOSSIL) Pana, 2003 †
Strandzhia bythinellopenia D.G. Georgiev & P. Glöer,2013 Bulgaria, Strandzha
Sadleriana byzanthina (H.C. Küster, 1852) Turkey
Hydrobia caerulescens (FOSSIL) (J.F. Gmelin, 1791 †)
Pseudamnicola calamensis P. Glöer, S. Bouzid& H.D. Boeters, 2010 Algeria
Hydrobia calderoni (FOSSIL) Royo Gómez, 1922 †
Bythiospeum calepii E. Pezzoli Italy, Bergamo2 mm
Iglica calepii Niero & Pezzoli, 2016
Hydrobia californica G.W. Tryon, 1865 California, San Francisco
Pyrgulopsis californiensis W.O. Gregg & D.W. Taylor,1965 California, San Diego County
Radomaniola callosa (M. Paulucci, 1881) Italy, Abruzzo
Beddomeia camensis W.F. Ponder & K.B. Clark,1993 Tasmania, Cam River
Alzoniella camocaensis Rolán & Boeters, 2015 Spain
Cyclothyrella candidula (FOSSIL) (M. von Neumayr, 1869 †) Croatia
Alzoniella cantabrica (H.D. Boeters, 1983) Spain, Adra
Pseudamnicola capellinii (FOSSIL) (W.A. Wenz, 1919 †)
Micromelania capellinii (FOSSIL) W.A. Wenz, 1925 †
Pyrgula capellinii (FOSSIL) W.A. Wenz, 1919 †
Beddomeia capensis W.F. Ponder & K.B. Clark,1993 Tasmania, Waratah
Radomaniola caputlacus (H. Schütt & R. Sesen,1993) Turkey
Socenia carasiensis (FOSSIL) E. Jekelius, 1944 †
Tanousia carasiensis (FOSSIL) (E. Jekelius, 1944 †)
Pseudamnicola carenosuturata (FOSSIL) Pana, 2005 †
Kirelia carinata P. Radoman, 1973 Turkey