Melanoides bavayi P. Dautzenberg & J. Germain,1914
Aylacostoma behni (L.A. Reeve, 1860)
Thiara bequaerti P. Dautzenberg & J. Germain,1914
Bayania bezanconi (FOSSIL) (Vasseur, 1881 †)
Aylacostoma bicinctum (L.A. Reeve, 1860)
Hemisinus bituminifer (FOSSIL) Cooke, 1919 †
Melania blainvillii (FOSSIL) Münster, 1844 †
Stenomelania blatta (I. Lea, 1850)
Stenomelania boninensis (I. Lea, 1856)
Bayania boussaci (FOSSIL) Szöts, 1953 †
Hemisinus brasiliensis (S. Moricand, 1838)
Coptostylus brevis (FOSSIL) (J. de C. Sowerby,1826 †)
Hemisinus brevis (A.V.M.D. D'Orbigny,1841)
Melania brocchii (FOSSIL) O.G. Michelotti, 1847 †
Thiara broecki S. Putzeys, 1899
Aylacostoma browni (FOSSIL) (Etheridge, 1879 †)
Aylacostoma brunneum R.E. Vogler & J.G. Peso,2014
Ptychomelania buccinella (FOSSIL) F. Sacco, 1895 †
Thiara buettikoferi M.M. Schepman, 1888
Melania bullia (FOSSIL) H.F.A. von Ihering,1907 †
Pachymelania byronensis (W. Wood, 1828)
Melania canalis I. Lea, 1850
Thiara cancellata P.F. Röding, 1798
Thiara carnatis G. Perry, 1811
Melanoides castrepiscopalensis (FOSSIL) (J. Almera, 1894 †)
Melanoides catalaunica (FOSSIL) (J. Almera& Bofill y Poch, 1895 †)
Thiara charreyi P.M.A. Morelet, 1845
Aylacostoma chloroticum P.H. Scott, 1954
Aylacostoma ci L.R.L. Simone, 2001
Melania circumsulcata G. von dem Busch
Melania claibornensis (FOSSIL) A. Heilprin, 1879 †
Sheppardiconcha clavata (FOSSIL) Wesselingh, 2006 †
Stenomelania clavus (J.B.P.A. Lamarck, 1822)
Sheppardiconcha colombiana (FOSSIL) Nuttall, 1990 †
Melania concentrica (FOSSIL) Münster, 1841 †