Triphora calva M.J. Faber& R.G. Moolenbeek, 1991 Bahamas
Triphora calypsonis (FOSSIL) C.J. Maury, 1917 † Dominican Republic
Eutriphora cana (J.C. Verco, 1909) Queensland
Nototriphora canarica (F. Nordsieck& F.F. Talavera, 1979) Canary Islands6,9 mm
Aclophora cancellata C.F. Laseron, 1958
Viriola cancellata (R.B. Hinds, 1843) Hawaii8 mm
Notosinister candefactus S. Kosuge, 1963 Japan, Kotoga beach
Triphora candida R.B. Hinds, 1843
Sagenotriphora candidula E. Rolán& R. Fernández-Garcés, 2008 Florida
Triphora capensis P. Bartsch, 1915 South Africa, Port Alfred
Coriophora capricornia (C.F. Laseron, 1958) New South Wales
Triphora caracca W.H. Dall, 1927 America
Triphora caribbeana G.D. Treece, 1980
Metaxia carinapex J. van der Linden, 1998
Viriola carinata (F.F. Talavera, 1975) Canary Islands, Lanzarote
Inella carinata B.A. Marshall, 1983 Canary Islands, Lanzarote
Iniforis carmelae E. Rolán& R. Fernández-Garcés, 1993 Cuba
Triphora carpenteri P. Bartsch, 1907 Bahamas
Mastonia carteretensis (R.B. Hinds, 1843)
Iniforis casta (R.B. Hinds, 1843) Bahamas5 mm
Triphora castaneofusca K.H.J. Thiele, 1930
Triphora catalinensis P. Bartsch, 1907 Bahamas
Triphora cerea E.A. Smith, 1906
Triphora chamberlini F. Baker, 1926 West America
Mastoniaeforis chaperi (F.P. Jousseaume, 1884) Réunion3,9 mm
Triphora charybdis Fernandes & A. Pimenta,2015
Triphora chathamensis P. Bartsch, 1907 Galapagos5 mm
Inella chrysalis S. Kosuge, 1963 Taiwan
Triphora chrysolitha E.A. Kay, 1979 Hawaii6 mm
Notosinister cinereus (C. Hedley, 1902) Australia
Viriola cingulata (A. Adams, 1854) Fiji Islands4 mm
Mastonia cingulifera (W.H. Pease, 1861) Philippines, Camotes Island3,2 mm
Euthymella clathrata (A.A. Gould, 1861) Indo-Pacific
Mastonia clavata (W.H. Pease, 1861) Hawaii8,3 mm
Mastonia claviculta (C.F. Laseron, 1958)