Allodiscus austrodimorphus R.K. Dell, 1955
Sinployea avanaensis G.A. Solem, 1983
Rhophodon bairnsdalensis C.J. Gabriel, 1930
Pulchridomus barbatulus (L.A. Reeve, 1852)
Climocella barkeri J.F. Goulstone, 1997
Letomola barrenensis (W.F. Petterd, 1879)
Allodiscus basilirata N.W. Gardner, 1967
Discocharopa bassi (J.W. Brazier, 1871)
Trachycystis bathycoele (J.C. Melvill& J.H. Ponsonby, 1892)
Allocharopa belli (J.C. Cox, 1864)
Loisthodon benhami (H.H. Suter, 1909)
Charopa bianca F.W. Hutton, 1883
Ruthvenia biciliata (L. Pfeiffer, 1855)
Ruthvenia bicincta (A.R.J.B. Bavay& P. Dautzenberg, 1912)
Egestula bicolor (F.M. Climo, 1973)
Cavellia biconcava (L. Pfeiffer, 1853)
Helenodiscus bilamellatus unknown
Amphidoxa binneyana (L. Pfeiffer, 1847)
Bischoffena bischoffensis (W.F. Petterd, 1879)
Ptychodon blacki R.K. Dell, 1955
Allocharopa brazieri (J.C. Cox, 1868)
Pseudegestula brookesi (R.K. Dell, 1954)
Allodiscus brooki B.A. Marshall & G.M. Barker,2008
Phenacohelix brooki J.F. Goulstone, 2001
Cavellia brouni (H.H. Suter, 1891)
Cavellia buccinella (L.A. Reeve, 1852)
Trachycystis burnupi (J.C. Melvill& J.H. Ponsonby, 1903)
Stephacharopa calderaensis F.A.W. Miquel & J.F. Araya,2013
Pararhytida caledonica (J.C.H. Crosse, 1868)
Ruthvenia caliginosa (E.R. Sykes, 1898)
Jokajdon callizonus Unknown
Allodiscus camelinus B.A. Marshall & G.M. Barker,2008
Ngairea canaliculata J. Stanisic, 1990
Oreomava cannfluviatilus (C.J. Gabriel, 1929)
Trachycystis capensis (L. Pfeiffer, 1841)