Coptochetus scalaroides (FOSSIL) (J.B.P.A. Lamarck,1803 †) France, Brittany13 mm
Euthria scepta K. Fraussen & R. Hadorn,2003 New Caledonia18 mm
Janiopsis schlumbergeri (FOSSIL) (A.E.M. Cossmann, 1889 †)
Pisania scholvieni H. Rolle, 1892
Egotistica scirrhoma (FOSSIL) J. Marwick, 1934 † New Zealand, South Island
Cominella scirrifer (FOSSIL) C.R. Laws, 1933 †
Plicifusus scissuratus W.H. Dall, 1918 Japan, Hokkaido55,6 mm
Hesperisternia scissus (FOSSIL) A.A. Olsson, 1964 †
Volutopsius scotiae K. Fraussen, D.W. McKay& J. Drewery, 2013 UK, Scotland
Bruclarkia seattlensis (FOSSIL) J.W. Durham, 1944 † USA, California
Cantharus seguinensis (FOSSIL) Garvie, 2013 † Texas, Bastrop County19,2 mm
Pisania semicostata (FOSSIL) R. Tate, 1888 †
Cantharus semiplicatus (FOSSIL) G.P. Deshayes, 1834 † France, Paris Basin22 mm
Burnupena semisulcata (J.B.P.A. Lamarck, 1818) South Africa, Cape St. Francis35 mm
Engina senae H.A. Pilsbry & H.N. Lowe,1932
Buccinum senshumaruae (S. Kosuge& S. Ishiyama, 1971) Japan, Hokkaido71 mm
Austrofusus separabilis (FOSSIL) P.A. Maxwell, 1992 †
Cantharus septemcostatus G.J. Vermeij& P. Bouchet, 1998 New Caledonia30,2 mm
Bathydomus setosus (R.B. Watson, 1882)
Latisipho severinus (W.H. Dall, 1919) California, Monterey Bay
Plicifusus sfaxianus F. Nordsieck, 1968 Tunisia
Hesperisternia shaskyi (S.S. Berry, 1959) Pacific Panama44 mm
Prodotia shepstonensis (J.R. le B. Tomlin, 1926) Mozambique16 mm
Buccinum shiretokoensis T. Habe & K. Itô, 1976 Kamchatka80 mm
Siphonalia shojii (FOSSIL) K. Hirayama, 1956 † Japan, Yamaguchi
Engina siderea (L.A. Reeve, 1846) New Caledonia12,6 mm
Buccinum sigmatopleura W.H. Dall, 1907 Alaska35 mm
Siphonalia signa (L.A. Reeve, 1846) China, Zhejiang44,6 mm
Chlanidota signeyana Powell, 1951
Pollia sillapaytensis (FOSSIL) A.A. Olsson, 1930 † Piura, Peru
Prosipho similis K.H.J. Thiele, 1912 Ross Sea7,5 mm
Retifusus similis (A.N. Golikov& V.V. Gulbin, 1977)
Monostiolum simonei G.T. Watters, 2016
Buccinum simplex (A.T. von Middendorff,1848) Hokkaido
Mohnia simplex (A.E. Verrill, 1884)