Engoniophos schmidti (FOSSIL) B.M. Landau, F. Da Silva& S.M. Heitz, 2016 † Venezuela
Nassarius schoenni (FOSSIL) (R. Hoernes& Aulinger, 1882 †) Poland15 mm
Nassarius schroeckingeri (FOSSIL) (R. Hoernes& Aulinger, 1882 †) Romania, Deva13 mm
Nassarius schroederi (FOSSIL) (F. Kautsky, 1925 †) Netherlands5 mm
Nassarius scissuratus (W.H. Dall, 1889) Uruguay10,4 mm
Antillophos scitamentus K. Fraussen & G.T. Poppe,2005 Philippines, Cagayan14,1 mm
Phos sculptilis R.B. Watson, 1886 Australia, Mackay21 mm
Nassarius seclusus (FOSSIL) Fischer, 1891 † Indonesia, Jawa Tengah
Tritiaria seguinensis (FOSSIL) Garvie, 2013 † Texas, Bastrop County5 mm
Pseudocominella semicostata (FOSSIL) T.R. Nuttall& J. Cooper, 1973 † UK, Isle of Wight
Cymatophos semicostatus (FOSSIL) (W.M. Gabb, 1873 †)
Bullia semiplicata (J.E. Gray, 1833) Oman21 mm
Nassarius semistriatus (FOSSIL) (G.B. Brocchi, 1814 †) Italy, Liguria18 mm
Nassarius semisulcatus (J.B. Hombron& C.H. Jacquinot, 1848) Philippines, Masbate Island15 mm
Bullia sendersi R.N. Kilburn, 1978 Kenya, Malindi31 mm
Tritia senegalensis (H. von Maltzan, 1884) Senegal, Dakar12 mm
Phos senticosus (C. Linnaeus, 1758) China, Zhejiang42 mm
Tritia separabilis (FOSSIL) (C.R. Laws, 1939 †)
Phos seranus H. Fischer in J. Wanner,1927 Philippines, Aliguay Island13,7 mm
Nassarius serraticosta (FOSSIL) (H.G. Bronn, 1831 †) Hungary, Borsodbóta11 mm
Nassarius serratus (FOSSIL) (G.B. Brocchi, 1814 †) Italy, Emilia33 mm
Ilyanassa sexdentata (FOSSIL) (T.A. Conrad, 1843 †) USA, North Carolina, Bladen
Nassarius shacklefordi (J.C. Melvill& R. Standen, 1896) China, Zhejiang14 mm
Nassarius shaskyi J.H. McLean, 1970 Mexico, Acapulco22 mm
Cyllene sibogae M.M. Schepman, 1911 Philippines, Negros Island6,8 mm
Nassarius signatus (R.W. Dunker, 1847) South Africa, Jeffreys Bay13,2 mm
Reticunassa silvardi (H.H. Kool & H. Dekker,2006) New Caledonia, Touho Channel7,44 mm
Bullia similis G.B. III Sowerby, 1897 Park Rynie, Natal, South Africa
Nassarius simizui (FOSSIL) Y. Otuka, 1934 † Japan, Iwate
Reticunassa simoni (H.H. Kool & H. Dekker,2007) Madagascar, Tulear6,8 mm
Bullia simplex (FOSSIL) Martin, 1879 † Indonesia, Junghuhn
Nassarius sinarus (R.A. Philippi, 1851) Malaysia
Nassarius sinusigerus (A. Adams, 1852) Philippines, Olango Island18,1 mm
Tritia siquijorensis (A. Adams, 1852) Bahamas32 mm
Cyllene sismondai (FOSSIL) (L.M.D. Bellardi, 1882 †) Italy, Piemonte11 mm