Engoniophos schmidti (FOSSIL) B.M. Landau, F. Da Silva& S.M. Heitz, 2016 †
Nassarius schoenni (FOSSIL) (R. Hoernes & Aulinger,1882 †)
Nassarius schroeckingeri (FOSSIL) (R. Hoernes & Aulinger,1882 †)
Nassarius schroederi (FOSSIL) (F. Kautsky, 1925 †)
Nassarius scissuratus (W.H. Dall, 1889)
Antillophos scitamentus K. Fraussen & G.T. Poppe,2005
Phos sculptilis R.B. Watson, 1886
Nassarius seclusus (FOSSIL) Fischer, 1891 †
Tritiaria seguinensis (FOSSIL) Garvie, 2013 †
Pseudocominella semicostata (FOSSIL) T.R. Nuttall & J. Cooper,1973 †
Cymatophos semicostatus (FOSSIL) (W.M. Gabb, 1873 †)
Bullia semiplicata (J.E. Gray, 1833)
Nassarius semistriatus (FOSSIL) (G.B. Brocchi, 1814 †)
Nassarius semisulcatus (J.B. Hombron& C.H. Jacquinot, 1848)
Bullia sendersi R.N. Kilburn, 1978
Tritia senegalensis (H. von Maltzan, 1884)
Phos senticosus (C. Linnaeus, 1758)
Tritia separabilis (FOSSIL) (C.R. Laws, 1939 †)
Phos seranus H. Fischer in J. Wanner,1927
Nassarius serraticosta (FOSSIL) (H.G. Bronn, 1831 †)
Nassarius serratus (FOSSIL) (G.B. Brocchi, 1814 †)
Ilyanassa sexdentata (FOSSIL) (T.A. Conrad, 1843 †)
Nassarius shacklefordi (J.C. Melvill & R. Standen,1896)
Nassarius shaskyi J.H. McLean, 1970
Cyllene sibogae M.M. Schepman, 1911
Nassarius signatus (R.W. Dunker, 1847)
Reticunassa silvardi (H.H. Kool & H. Dekker,2006)
Bullia similis G.B. III Sowerby, 1897
Nassarius simizui (FOSSIL) Y. Otuka, 1934 †
Reticunassa simoni (H.H. Kool & H. Dekker,2007)
Bullia simplex (FOSSIL) Martin, 1879 †
Nassarius sinarus (R.A. Philippi, 1851)
Nassarius sinusigerus (A. Adams, 1852)
Tritia siquijorensis (A. Adams, 1852)
Cyllene sismondai (FOSSIL) (L.M.D. Bellardi, 1882 †)