Peringia benoisti (FOSSIL) (G.F. Dollfus& P. Dautzenberg, 1886 †)
Prososthenia benvenutii (FOSSIL) D. Esu & O. Girotti,2016 †
Caspiohydrobia bergi Y.I. Starobogatov& S.I. Andreeva, 1981
Alzoniella bergomensis E. Pezzoli, 2010
Pyrgulopsis bernardina D.W. Taylor, 1987
Attebania bernasconii M. Ghamizi, M. Bodon, Boulal& F.L. Giusti, 1999
Falsipyrgula beysehirana (H. Schütt, 1965)
Hydrobia bialozurkensis (FOSSIL) (Du Bois de Montpéreux,1831 †)
Pyrgula bicarinata (FOSSIL) Š. Brusina, 1902 †
Prososthenia bicarinata (FOSSIL) Olujic, 1999 †
Pyrgula bicincta (FOSSIL) Lörenthey, 1894 †
Muellerpalia bicincta (FOSSIL) (A. Fuchs, 1870 †)
Sulawesidrobia bicolor S. Zielske, M. Glaubrecht& M. Haase, 2011
Yongkangia biconvexa (FOSSIL) Yü, 1980 †
Hydrobia bicristata (FOSSIL) Simionescu & Barbu,1940 †
Micromelania bielzi (FOSSIL) (Š. Brusina, 1902 †)
Pyrgulopsis bifurcata R. Hershler, 1998
Belgrandia bigorrensis A. Paladilhe, 1869
Pseudamnicola bilgini H. Schütt & R. Sesen,1993
Pseudamnicola bilineata (FOSSIL) (Simionescu & Barbu,1940 †)
Fonscochlea billakalina W.F. Ponder, R. Hershler& B.W. Jenkins, 1989
Pontohoratia birsteini (Y.I. Starobogatov, 1962)
Pseudamnicola bithynoides (FOSSIL) E. Jekelius, 1932 †
Hydrobia blacki H.A. Pilsbry, 1930
Pyrgulopsis blainica R. Hershler, H.P. Liu& D.L. Gustafson, 2008
Bythiospeum blihense P. Glöer & J. Grego, 2015
Phrantela bobbrowni W.F. Ponder & K.B. Clark,1993
Sivasi bodoni S.K. Sahin, S.B. Koca& M.Z. Yildirim, 2012
Tanousia bodosensis (FOSSIL) (J.R. Roth, 1881 †)
Caspia boeckhi (FOSSIL) (Lörenthey, 1902 †)
Belgrandiella boetersi P.L. Reischütz & G. Falkner,1998
Mercuria boetersi (FOSSIL) W.R. Schlickum& F. Strauch, 1979 †
Pyrgula boettgeri (FOSSIL) Š. Brusina, 1897 †
Turricaspia bogatscheviana (B.M. Logvinenko& Y.I. Starobogatov, 1968)
Turricaspia bogensis (F. Dubois De Montpéreuxin H.C. Küster, 1852)