Semicassis pyrum (J.B.P.A. Lamarck, 1822)
Semicassis pyrum hamiltoni (A.W.B. Powell, 1928)
Semicassis pyrum nivea J.W. Brazier, 1872
Semicassis pyrum powelli (H.J. Finlay, 1928)
Semicassis pyrum spectabilis (T. Iredale, 1929)
Semicassis pyrum stadiale (C. Hedley, 1914)
Semicassis pyshtensis (FOSSIL) W.O. Addicott, 1976 †
Cassis quenstedti (FOSSIL) A.H.E. Beyrich †
Semicassis reclusa (FOSSIL) R.J.L. Guppy, 1873 †
Sconsodolium rembangensis (FOSSIL) (A. Pannekoek, 1936 †)
Cassis retusa (FOSSIL) O.G. Michelotti, 1861 †
Phalium rondeleti (FOSSIL) (B. de Basterot, 1825 †)
Semicassis royana (T. Iredale, 1914)
Semicassis royana hedleyi T. Iredale, 1927
Cypraecassis rufa (C. Linnaeus, 1758)
Galeodea rugosa (C. Linnaeus, 1771)
Semicassis saburon (J.G. Bruguière, 1792)
Semicassis saburon senegalensis Unknown
Semicassis saburon varicosa (J.G. Bruguière, 1792)
Doliocassis samanica (FOSSIL) A.A. Olsson, 1928 †
Semicassis sculpta (FOSSIL) (J. de C. Sowerby,1839 †)
Semicassis semigranosa (J.B.P.A. Lamarck, 1822)
Galeodea senex (FOSSIL) (F.W. Hutton, 1873 †)
Semicassis senni (FOSSIL) Rustch, 1934 †
Galeodea shubutensis (FOSSIL) (T.H. Aldrich, 1885 †)
Galeodea singularis (FOSSIL) G.P. Deshayes, 1865 †
Semicassis sinuosum J.C. Verco, 1904
Semicassis sinuosum angustata (B.C. Cotton& F.C. Godfrey, 1931)
Semicassis skinneri (FOSSIL) J. Marwick, 1928 †
Dalium solidum W.H. Dall, 1889
Semicassis sophia (J.W. Brazier, 1872)
Sconsia striatula (FOSSIL) (L.M.D. Bellardi& O.G. Michelotti 1840 †)
Cypraecassis subcrumena (FOSSIL) (A.V.M.D. D'Orbigny,1852 †)
Cassis subgranulosa (FOSSIL) A.V.M.D. D'Orbigny,1852 †
Semicassis subintermedia (FOSSIL) (Orbigny, 1852 †)