Triphora calva M.J. Faber& R.G. Moolenbeek, 1991
Triphora calypsonis (FOSSIL) C.J. Maury, 1917 †
Eutriphora cana (J.C. Verco, 1909)
Nototriphora canarica (F. Nordsieck& F.F. Talavera, 1979)
Aclophora cancellata C.F. Laseron, 1958
Viriola cancellata (R.B. Hinds, 1843)
Notosinister candefactus S. Kosuge, 1963
Triphora candida R.B. Hinds, 1843
Sagenotriphora candidula E. Rolán& R. Fernández-Garcés, 2008
Triphora capensis P. Bartsch, 1915
Coriophora capricornia (C.F. Laseron, 1958)
Triphora caracca W.H. Dall, 1927
Triphora caribbeana G.D. Treece, 1980
Metaxia carinapex J. van der Linden, 1998
Viriola carinata (F.F. Talavera, 1975)
Inella carinata B.A. Marshall, 1983
Iniforis carmelae E. Rolán& R. Fernández-Garcés, 1993
Triphora carpenteri P. Bartsch, 1907
Mastonia carteretensis (R.B. Hinds, 1843)
Iniforis casta (R.B. Hinds, 1843)
Triphora castaneofusca K.H.J. Thiele, 1930
Triphora catalinensis P. Bartsch, 1907
Triphora cerea E.A. Smith, 1906
Triphora chamberlini F. Baker, 1926
Mastoniaeforis chaperi (F.P. Jousseaume, 1884)
Triphora charybdis Fernandes & A. Pimenta,2015
Triphora chathamensis P. Bartsch, 1907
Inella chrysalis S. Kosuge, 1963
Triphora chrysolitha E.A. Kay, 1979
Notosinister cinereus (C. Hedley, 1902)
Viriola cingulata (A. Adams, 1854)
Mastonia cingulifera (W.H. Pease, 1861)
Euthymella clathrata (A.A. Gould, 1861)
Mastonia clavata (W.H. Pease, 1861)
Mastonia claviculta (C.F. Laseron, 1958)