Aulacofusus calamaeus (W.H. Dall, 1907) Japan21,5 mm
Bathydomus calathiscus (R.B. Watson, 1882)
Aulacofusus calathus (W.H. Dall, 1919) Alaska
Buccinum calcar (T. Martyn, 1784) Cape Horn
Zelandiella calcarata (FOSSIL) J. Marwick, 1931 † New Zealand, North Island
Euthria calderoni E. Rolán, 1985 Cape Verde16,9 mm
Ancistrolepis californicus W.H. Dall, 1919 USA, California
Siphonalia callizona J.T. Kuroda& T. Habe in T. Habe, 1961 Taiwan30,5 mm
Phaenomenella callophorella (K. Fraussen, 2004) Taiwan, Pratas Island21 mm
Colus callorhinus (W.H. Dall, 1877) Bering Sea, Pribiloff Islands45 mm
Colus callorhinus steinegeri (W.H. Dall, 1884) Bering Sea
Cantharus calusa (FOSSIL) E.J. Petuch, 1994 † Florida, Palm Beach County13,5 mm
Siphonalia calvertana (FOSSIL) Martin, 1904 †
Janiopsis calvimontensis (FOSSIL) (A.E.M. Cossmann, 1889 †) France, Paris Basin21 mm
Euthria calypso R. von Cosel& L.P. Burnay, 1983 Cape Verde43 mm
Clea cambojiensis (L.A. Reeve, 1861) Cambodia
Caducifer camelopardalus G.T. Watters, 2009 Brazil, Bahia12,2 mm
Searlesia cammani (FOSSIL) (W.H. Dall †) Oregon, Coos bay, Astoria formation48 mm
Pareuthria campbelli (H. Filhol, 1880) New Zealand27 mm
Pollia campisii R. Ardovini, 2015 Sicily, Siracusa16,2 mm
Bartonia canaliculata (FOSSIL) (J. de C. Sowerby,1823 †) UK, England, Hampshire20 mm
Pseudoliomesus canaliculatus (W.H. Dall, 1874)
Solenosteira cancellaria (T.A. Conrad, 1846) Florida32,4 mm
Zelandiella cancellaria (FOSSIL) Finlay & J. Marwick,1937 †
Pollia cancellarioides (FOSSIL) (B. de Basterot, 1825 †) France, Aquitaine
Pollia cancellaroides (FOSSIL) (B. de Basterot, 1825 †) France, Aquitaine19 mm
Metula cancellata (FOSSIL) W.M. Gabb, 1873 † Dominican Republic23 mm
Pareuthria candidata (J.F. Mabille& A. de Rochebrune, 1889) Cape Horn15 mm
Chauvetia candidissima (R.A. Philippi, 1836) Senegal, Dakar10 mm
Chauvetia candidissima canarica F. Nordsieck& F.F. Talavera, 1979 Canary Islands, Fuerteventura7 mm
Gaillea canetae (W.J. Clench& C.G. Aguayo, 1944) Honduras, Roatan Island
Engina cantaurana (FOSSIL) B.M. Landau& G.J. Vermeij, 2012 † Venezuela
Cantharus cantharoides (FOSSIL) A.E.M. Cossmann, 1902 † France, Paris Basin16 mm
Cominella canturiensis (R.K. Dell, 1951) New Zealand, Chatham Rise
Pollia canullaroides (FOSSIL) J.P.S. Grateloup † Hungary, Börzsöny11 mm