Candidula coudensis D.T. Holyoak & G.A. Holyoak,2010
Cretigena crassicosta R.A. Bank, Gittenberger& E. Neubert, 2013
Narina crassicosta A.A. Schileyko, 1978
Actinella crassiuscula (T.D.A. Cockerell, 1921)
Kalitinaia crenimargo (L. Pfeiffer, 1847)
Monacha crenophila L. Pfeiffer, 1857
Xerocrassa cretica (L. Pfeiffer, 1841)
Xerocrassa cretica bengasiana R.A.M. Brandt, 1959
Xerocrassa cretica subabiari R.A.M. Brandt, 1959
Monacha cretica B. Hausdorf, 2003
Xerotricha crispolanata (T.V. Wollaston, 1878)
Monacha crispulata (A. Mousson, 1861)
Trochoidea cucullus E.C. Von Martens, 1873
Xerocrassa cuerdai (L. Gasull, 1963)
Trochoidea cumiae P. Calcara, 1847
Nanaja cumulata A.A. Schileyko, 1978
Ponentina curtivaginata D.T. Holyoak & G.A. Holyoak,2012
Trochoidea cyclodon D'Orbigny, 1839
Helicopsis cyclostremoides G.B. Sowerby, 1904
Helicopsis cypriola (C.A. Westerlund, 1889)
Pyrenaearia daanidentata J.G.M. Raven, 1988
Shileykoia daghestana (W. Kobelt, 1877)
Hygrohelicopsis darevskii A.A. Schileyko, 1978
Lejeania darnaudi (L. Pfeiffer, 1856)
Caucasocressa dasilepida (J.F. Mabille, 1881)
Xerosecta daurae P.M. Pallary, 1901
Xerocrassa davidiana (J.R. Bourguignat, 1863)
Xerocrassa davidiana picardi F. Haas, 1933
Helicella davrae (P.M. Pallary, 1901)
Xerosecta debackeriana (P.M. Pallary, 1920)
Metafruticicola dedegoelensis B. Hausdorf, B.A. Gümüs& M.Z. Yildirim, 2004
Xeroleuca degenerans T. Kira, 1955
Xeroleuca degenerans validor (A. Mousson, 1874)
Helicopsis dejecta (G.J. De Cristofori& G. Jan, 1832)
Geomitra delphinula (R.T. Lowe, 1831)