Leucosyrinx sansibarica K.H.J. Thiele, 1925
Antiplanes santarosana (W.H. Dall, 1902)
Brachytoma sarasvati (FOSSIL) E.W. Vredenburg, 1921 †
Crassispira saulcydiana (C.A. Récluz, 1851)
Tripia scabriuscula (FOSSIL) F.E. Edwards †
Crassispira scala Kantor, Stahlschmidt, Aznar-Cormano, Bouchet& Puillandre, 2016
Crassispira schillingi (H.C. Weinkauff& W. Kobelt, 1876)
Ptychobela schoedei K.H.J. Thiele, 1925
Epidirona schoutanica (W.L. May, 1911)
Crassispira seiuncta (FOSSIL) (L.M.D. Bellardi, 1877 †)
Crassispira semicolon (FOSSIL) (Sowerby, 1816 †)
Crassispira semigranosa (L.A. Reeve, 1846)
Crassispira semiinflata J. Grant & H.R. Gale,1931
Compsodrillia senaria (FOSSIL) W.P. Woodring, 1928 †
Inquisitor sexradiata (N.H. Odhner, 1917)
Inquisitor shibanoi O. Masuda, 1967
Epideira sibogae (M.M. Schepman, 1913)
Leucosyrinx sigsbei (W.H. Dall, 1881)
Comitas silicicola (FOSSIL) Darragh, 2017 †
Brachytoma simazirianus (FOSSIL) S. Nomura & N. Zinbo,1936 †
Crassispira sinensis (R.B. Hinds, 1843)
Megasurcula siogamensis S. Nomura, 1935
Crassispira soamanitraensis L. Bozzetti, 2008
Comitas sobrina (M. Yokoyama, 1923)
Comitas sobrinaeformis S. Nomura, 1937
Crassispira somalica M. Morassi & A. Bonfitto,2013
Otitoma sororcula Morassi,Nappo & Bonfitto, 2017
Burchia spectabilis A.V. Sysoev & D.W. Taylor,1997
Tiariturris spectabilis S.S. Berry, 1958
Funa spectrum (L.A. Reeve, 1845)
Comitas spencerensis (FOSSIL) E.W.J. Moore †
Inquisitor spicata (R.B. Hinds, 1843)
Antiplanes spirinae Y.I. Kantor & A.V. Sysoev,1991
Crassispira starri (FOSSIL) L.G. Hertlein, 1927 †
Megasurcula stearnsiana (W.J. Raymond, 1904)