Vepridaphne cestrum (C. Hedley, 1922)
Pleurotomella chapplei (FOSSIL) (Powell, 1944 †)
Xanthodaphne charcotiana P. Bouchet & A. Warén,1980
Theta chariessa (R.B. Watson, 1881)
Daphnella cheverti C. Hedley, 1922
Phymorhynchus chevreuxi (P. Dautzenberg& H. Fischer, 1897)
Gymnobela chistikovi A.V. Sysoev & D.L. Ivanov,1985
Raphitoma christfriedi E. Rolán, J. Otero-Schmidt& F. Fernandes, 1998
Daphnella chrysoleuca (J.C. Melvill, 1923)
Gymnobela chrysopelex (K.H. Barnard, 1963)
Theta chrysoplex K.H. Barnard, 1963
Gymnobela chyta (R.B. Watson, 1881)
Teretia cincta (FOSSIL) (Seguenza, 1880 †)
Eucyclotoma cingulata (W.H. Dall, 1890)
Lusitanops cingulatus P. Bouchet & A. Warén,1980
Phymorhynchus cingulatus A. Warén & P. Bouchet,2009
Phymorhynchus cingulatus (W.H. Dall, 1890)
Clinura circumfossa (FOSSIL) (A. von Koenen, 1872 †)
Pleurotomella circumvoluta (R.B. Watson, 1881)
Daphnella cladara A.V. Sysoev & P. Bouchet,2001
Xanthodaphne cladara A.V. Sysoev, 1997
Gymnobela clara K.H.J. Thiele, 1925
Phymorhynchus clarinda (W.H. Dall, 1908)
Austrodaphnella clathrata C.F. Laseron, 1954
Daphnella clathrata W.M. Gabb, 1865
Pleurotomella clathurellaeformis M.M. Schepman, 1913
Kermia clathurelloides R.N. Kilburn, 2009
Maoridaphne clifdenica (FOSSIL) (C.R. Laws, 1939 †)
Pseudodaphnella cnephaea (J.C. Melvill & R. Standen,1896)
Cenodagreutes coccyginus E.H. Smith, 1967
Pleurotomella coelorhaphe (P. Dautzenberg& H. Fischer, 1896)
Pagodidaphne colmani T. Shuto, 1983
Taranis columbella R.N. Kilburn, 1991
Raphitoma columnae (FOSSIL) (A. Scacchi, 1835 †)
Asperdaphne compacta C. Hedley, 1922