Massylaea rerayana (A. Mousson, 1874)
Chilostoma rhaetica P. von Ströbel, 1857
Frechenia rhenana (FOSSIL) H. Nordsieck, 2014 †
Tyrrheniberus ridens (E.C. Von Martens, 1884)
Isaurica riedeli P. Subai, 1994
Otala riffensis P.M. Pallary
Tacheocampylaea romagnolii (G. Dutailly, 1867)
Dupotetia romalea (J.R. Bourguignat, 1882)
Chilostoma rossmaessleri (L. Pfeiffer, 1842)
Helicigona rumelica (E.A. Rossmässler, 1838)
Helicigona rumelica balcanica W. Kobelt
Dupotetia russadirensis (P.M. Pallary, 1933)
Dupotetia russadirensis minor (P.M. Pallary, 1933)
Atlasica rutllanti J. Ahuir Galindo, 2015
Tingitana rutllanti J. Ahuir Galindo, 2017
Theba sacchii (E. Gittenberger& T.E.J. Ripken, 1987)
Josephinella sadleriana (E.A. Rossmässler, 1838)
Macularia saintyvesi (W. Kobelt, 1906)
Helix salomonica G. Nägele, 1899
Helixena sanctaemariae (P.M.A. Morelet& H. Drouët, 1857)
Hemicycla saponacea (R.T. Lowe, 1861)
Hemicycla sarcostoma (P.B. Webb & S. Berthelot,1833)
Tyrrheniberus sardonius (E.C. Von Martens, 1884)
Agalactochilus sarmaticus (FOSSIL) (Gaál, 1910) †
Helicigona sattmanni P. Subai, 1995
Hemicycla saulcyi (A.V.M.D. D'Orbigny,1839)
Hemicycla saulcyi carta (J.F. Mabille, 1882)
Ambigua saxetana (M. Paulucci, 1886)
Murella scabriuscula (G.P. Deshayes, 1830)
Murella scabriuscula demissa (L. Benoit, 1857)
Murella scabriuscula ericensis (G.P. Deshayes, 1860)
Murella scabriuscula segestana (R.A. Philippi, 1836)
Rossmaessleria scherzeri (L. Pfeiffer & J. Zelebor,1867)
Helix schlaeflii Mousson, 1859
Helix schlaerotricha J.R. Bourguignat, 1870