Pseudosaphtia brunnea A.J. de Winter, 2008
Helicarion bullaceus N.H. Odhner, 1917 Queensland
Plegma caelatura (A.E.J. Férussac, 1821) French Guiana
Ctenophila caldwelli (W.H. Benson, 1859) Mascarene Islands
Helicarion castanea L. Pfeiffer, 1853 Australia, Great Australian Bight
Helicarion catletti J.W. Brazier, 1872 Australia, Lord Howe Island
Petalochlamys cerasina (H.A. Pilsbry, 1902) Japan, Mitsumori
Helicarion ceratodes G.P.L.K. Gude, 1900 Japan
Helicarion charis T. Iredale, 1944 Australia, Lord Howe Island
Dendrotrochus cineraceus (J.B. Hombron& C.H. Jacquinot, 1841) Solomon Islands
Helicarion circumdata H.A. Pilsbry, 1902 Japan, Tokyo
Aenigmatoconcha clivicola C. Tumpeesuwan& S. Tumpeesuwan, 2017
Mathewsoconcha compacta H.B. Preston, 1913 Norfolk Island
Orpiella compluviata (J.C. Cox, 1871) Solomons Islands, Guadalcanal Island
Geotrochus conicoides W. Metcalfe, 1851 Malaysia, Borneo
Geotrochus conicoides subconvexa O.F. von Möllendorff Philippines, Palawan Island15,8 mm
Geotrochus conus (R.A. Philippi, 1841) Indonesia, Java
Orpiella cookensis A.A. Gould Fiji Islands25 mm
Nitor coriacea (A. Manzoni, 1868) Europe
Parakaliella costata (H.A. Pilsbry& Y. Hirase, 1904) Japan
Helicarion crassiaxis J.T. Kuroda, 1969 Japan
Helicarion crenata J.T. Kuroda & M. Azuma,1982 Japan
Trochochlamys crenulata (G.P.L.K. Gude, 1900) Japan, Mitsumori
Hemiglypta cuvierana (H.C. Lea, 1893) Philippines, Luzon Island
Helicarion cuvieri A.E.J. Férussac, 1821 Tasmania
Dendrotrochus cyrene (J.C.H. Crosse, 1865) Solomon Islands
Nitor dagueneti (L. de Folin, 1873) Europe
Conibycus dahli K.H.J. Thiele, 1928
Helicarion danjoensis H. Minato, 1974 Japan, Nagasaki
Japanochlamys decens (H.A. Pilsbry& Y. Hirase, 1904) Japan, Niigata
Helicarion delecta T. Iredale, 1944 Australia, Lord Howe Island
Rahula delopleura J.J. Vermeulen, T.S. Liew& M. Schilthuizen, 2015
Roybellia depressa H.B. Preston, 1913 Norfolk Island
Parakaliella depressa (O.F. von Möllendorff,1883) Japan
Helicarion depressus G.A. von Jacobi, 1898 Japan