Grandinenia crassilabris H. Nordsieck, 2016
Thaumatoptyx crassilamellata J.T. Kuroda, 1941 Taiwan
Cretica cretensis (E.A. Rossmässler, 1836) Greece, Crete Island19 mm
Cretica cretensis byzantina (J.G.F. de Charpentier,1852) Greece, Crete Island21 mm
Loosjesiella crispa (R.T. Lowe, 1831) Tunisia19,5 mm
Clausilia crispula L. Pfeiffer, 1839
Albinaria cristatella (H.C. Küster, 1861) Greece13 mm
Albinaria cristatella cristulifera (O. Böttger, 1892) Greece12 mm
Margaritiphaedusa cristina (P.V. Gredler, 1888)
Incania crossei (J.G. Hidalgo, 1869) Ecuador22,8 mm
Clausilia cruciata (S.E. Studer, 1820) Switzerland12 mm
Clausilia cruciata amiatae E.C. Von Martens in G. Bonelli, 1873 Italy, Toscana10 mm
Clausilia cruciata pedemontana H. Nordsieck, 1966 Italy, Biella11,9 mm
Sciocochlea cryptica P. Subai & M. Szekeres,1999 Greece, Ipiros
Renschiphaedusa cumingiana (L. Pfeiffer, 1845) Philippines20 mm
Renschiphaedusa cumingiana recondita (E.R. Sykes, 1894) Indonesia, Timor21 mm
Renschiphaedusa cumingiana simillima (E.A. Smith, 1896) Indonesia, Sulawesi14 mm
Cylindronenia cumulloana (H.A. Pilsbry, 1949) Peru12 mm
Serrulina cuvieri (FOSSIL) (Delafond & Depéret,1893) †
Muticaria cyclopica Liberto, Reitano, Giglio, Colomba& Sparacio, 2016 FR-FRA, IT-SI, ES-BAL, ES-SPA
Alopia cyclostoma E.A. Bielz, 1858 Romania
Alopia cyclostoma albicostata M. von Kimakowicz, 1894 Romania13,9 mm
Cyclonenia cyclostoma (L. Pfeiffer, 1849) Venezuela
Euphaedusa cylindrella (P.M. Heude, 1886)
Cristataria cylindrelliformis (J.R. Bourguignat, 1855) Lebanon
Cylindrophaedusa cylindrica (L. Pfeiffer, 1846) Himalaya
Mesophaedusa cymatodes (H.A. Pilsbry, 1905) Japan, Kagoshima
Albinaria cytherae (O. Böttger, 1894) Greece, Kithira Island13 mm
Metazaptyx daemonorum (H.A. Pilsbry, 1902) Japan, Tokara Islands11,7 mm
Metazaptyx daemonorum tokarana H.A. Pilsbry, 1909 Japan, Tokara Islands
Metazaptyx daemonorum viva H.A. Pilsbry, 1905 Okinawa, Ryukyu Island8,9 mm
Zaptyx daitojimana J.T. Kuroda, 1960 Okinawa
Tyrannophaedusa dalli (H.A. Pilsbry, 1902) Japan, Tokushima18 mm
Medora dalmatina (E.A. Rossmässler, 1835) Italy, Calabria21,6 mm
Medora dalmatina aquila (L. Pfeiffer, 1846) Yugoslavia18,8 mm