Neocancilla rikae E.G. Guillot de Suduiraut,2004
Mitra rinaldii H. Turner, 1993
Mitra rosacea L.A. Reeve, 1845
Mitra rosacea incarnata L.A. Reeve, 1845
Charitodoron rosadoi R.N. Kilburn, 1995
Mitra roselineae J.C. Martin & R. Salisbury,2013
Domiporta roseovitta Y.F. Huang, 2011
Mitra rossiae L.A. Reeve, 1844
Subcancilla ruberorbis A.M. Dekkers, M. Herrmann, G.T. Poppe& S.P. Tagaro, 2014
Nebularia rubiginosa L.A. Reeve, 1844
Nebularia rubritincta L.A. Reeve, 1844
Mitra rudis (FOSSIL) W.M. Gabb, 1873 †
Nebularia rueppellii L.A. Reeve, 1844
Domiporta rufilirata (A. Adams & L.A. Reeve,1850)
Subcancilla rufogyrata G.T. Poppe, S.P. Tagaro& R. Salisbury, 2009
Mitra rupicola L.A. Reeve, 1844
Proximitra rutidoloma (FOSSIL) (H.H. Suter, 1917 †)
Mitra sacerdotalis A. Adams, 1853
Ziba salisburyi (J. Drivas & M. Jay,1990)
Mitra salomacensis (FOSSIL) C. Mayer, 1891 †
Mitra salomacensis heteroclita (FOSSIL) M.A. Peyrot, 1930 †
Mitra salva H. Turner, 2001
Fusimitra sanctifrancisci (FOSSIL) C.J. Maury, 1925 †
Magnamitra sandrogorii Huang & Salisbury, 2017
Mitra sanguinolenta J.B.P.A. Lamarck, 1811
Mitra sarinoae G.T. Poppe, 2008
Mitra sarmientoi G.T. Poppe, 2008
Tiarella scabricula (C. Linnaeus, 1767)
Mitra schepmani R. Salisbury& E.G. Guillot de Suduiraut, 2003
Mitra schroeteri J.H.F. Link, 1807
Cancilla scrobiculata (G.B. Brocchi, 1814)
Cancilla scrobiculata crosnieri W.O. Cernohorsky, 1970
Cancilla scrobiculata karamanensis (FOSSIL) ErünalErentöz, 1958 †
Strigatella scutulata (J.F. Gmelin, 1791)
Mitra semiferruginea L.A. Reeve, 1845