Cominella chattonensis (FOSSIL) (Finlay, 1926 †)
Searlesia chatwini (FOSSIL) F.W. Harmer, 1914 †
Clinopegma checknum R. Tiba, 1981
Cantharus cheilotomus (FOSSIL) (R. Hoernes, 1848 †)
Clinopegma chikaoi R. Tiba, 1968
Clinopegma chikaoi aequespaceum R. Tiba, 1981
Aeneator chilensis (FOSSIL) C. Nielsen, 2003 †
Afer chinenensis (FOSSIL) F.S. MacNeil, 1960 †
Euthria chinense (F.S. MacNeil, 1961)
Manaria chinoi K. Fraussen, 2005
Engina chinoi K. Fraussen, 2009
Hesperisternia chipolana (FOSSIL) Gardner, 1944 †
Cyrtochetus chiraensis (FOSSIL) A.A. Olsson, 1931 †
Solenosteira chiriquiensis (FOSSIL) A.A. Olsson, 1922 †
Buccinum chishimanum H.A. Pilsbry, 1904
Pareuthria chlorotica (E.C. Von Martens, 1878)
Savatieria chordata Z.J.A. De Castellanos, E. Rolán& S. Bartolotta, 1987
Chlanidota chordata (H. Strebel, 1908)
Prosipho chordatus (H. Strebel, 1908)
Cominella chorista (FOSSIL) R.K. Dell, 1952 †
Bailya cidaris G.T. Watters, 2013
Buccinum ciliatum (O. Fabricius, 1780)
Buccinum ciliatum sericatum A. Hancock, 1846
Burnupena cincta (P.F. Röding, 1798)
Burnupena cincta limbosa (J.B.P.A. Lamarck, 1822)
Ptychosalpinx cinctum (FOSSIL) (M. Rouault, 1849 †)
Japeuthria cingulata (L.A. Reeve, 1846)
Cominella cingulata (FOSSIL) (F.W. Hutton, 1885 †)
Nassicola cingulifera (FOSSIL) (J. Marwick, 1931 †)
Engina cinis (L.A. Reeve, 1846)
Manaria circumsonaxa Fraussen & Stahlschmidt,2016
Phaenomenella cirsiumoides (K. Fraussen, 2004)
Lacinia claibornensis (FOSSIL) K.V.W. Palmer, 1937 †
Manaria clandestina P. Bouchet & A. Warén,1986
Tasmeuthria clarkei (J.E. Tenison-Woods,1876)