Aulacofusus calamaeus (W.H. Dall, 1907)
Bathydomus calathiscus (R.B. Watson, 1882)
Aulacofusus calathus (W.H. Dall, 1919)
Buccinum calcar (T. Martyn, 1784)
Zelandiella calcarata (FOSSIL) J. Marwick, 1931 †
Euthria calderoni E. Rolán, 1985
Ancistrolepis californicus W.H. Dall, 1919
Siphonalia callizona J.T. Kuroda& T. Habe in T. Habe, 1961
Phaenomenella callophorella (K. Fraussen, 2004)
Colus callorhinus (W.H. Dall, 1877)
Colus callorhinus steinegeri (W.H. Dall, 1884)
Cantharus calusa (FOSSIL) E.J. Petuch, 1994 †
Siphonalia calvertana (FOSSIL) Martin, 1904 †
Janiopsis calvimontensis (FOSSIL) (A.E.M. Cossmann, 1889 †)
Euthria calypso R. von Cosel & L.P. Burnay,1983
Clea cambojiensis (L.A. Reeve, 1861)
Caducifer camelopardalus G.T. Watters, 2009
Searlesia cammani (FOSSIL) (W.H. Dall †)
Pareuthria campbelli (H. Filhol, 1880)
Pollia campisii R. Ardovini, 2015
Bartonia canaliculata (FOSSIL) (J. de C. Sowerby,1823 †)
Pseudoliomesus canaliculatus (W.H. Dall, 1874)
Solenosteira cancellaria (T.A. Conrad, 1846)
Zelandiella cancellaria (FOSSIL) Finlay & J. Marwick,1937 †
Pollia cancellarioides (FOSSIL) (B. de Basterot, 1825 †)
Pollia cancellaroides (FOSSIL) (B. de Basterot, 1825 †)
Metula cancellata (FOSSIL) W.M. Gabb, 1873 †
Pareuthria candidata (J.F. Mabille& A. de Rochebrune, 1889)
Chauvetia candidissima (R.A. Philippi, 1836)
Chauvetia candidissima canarica F. Nordsieck& F.F. Talavera, 1979
Gaillea canetae (W.J. Clench & C.G. Aguayo,1944)
Engina cantaurana (FOSSIL) B.M. Landau& G.J. Vermeij, 2012 †
Cantharus cantharoides (FOSSIL) A.E.M. Cossmann, 1902 †
Cominella canturiensis (R.K. Dell, 1951)
Pollia canullaroides (FOSSIL) J.P.S. Grateloup †