Marinula rhoadsi H.A. Pilsbry, 1910 Mexico
Cassidula rhodostoma J.B. Hombron& C.H. Jacquinot, 1848 Papua, New Guinea
Carychium riparium L.R. Hubricht, 1978 Florida
Carychium rufolabiatum (FOSSIL) De Stefani, 1880 †
Cassidula rugata (J.F. Gmelin, 1791) Australia, Victoria Bonaparte31 mm
Auriculastra saccata (L. Pfeiffer, 1856) Japan, Kagoshima10,2 mm
Carychium sandbergeri (FOSSIL) Handmann, 1887 †
Pedipes sandwicensis W.H. Pease, 1860 Hawaii3 mm
Pythia savaiensis (A. Mousson, 1869)
Pythia scarabaeus (C. Linnaeus, 1758) Philippines, Olango Island41 mm
Zospeum schaufussi (G.R. von Frauenfeld,1862) Spain, Asturias
Carychium schlickumi F. Strauch, 1977 Russia, Georgia
Cassidula schmackeriana O.F. von Möllendorff,1885 Philippines, Mactan Island
Carychiopsis schwageri (FOSSIL) (A.E. Reuss, 1868 †) Czech Republic, Chomutov
Ellobium sciuri R.P. Lesson, 1831
Melampus sculptus L. Pfeiffer, 1850 Philippines, Mactan Island
Ellobium sedgvici (FOSSIL) Phillips, 1829 † UK, England, North Yorkshire
Melampus semiaratus M. Connolly, 1912 South Africa12 mm
Melampus semiauratus M. Connolly, 1912
Auriculastra semiplicata (H. Adams & A. Adams,1854)
Ellobium semisculptum (H. Adams & A. Adams,1854) Fiji Islands
Melampus semisulcatus A. Mousson, 1869 Bahamas
Laemodonta siamensis (P.M.A. Morelet, 1875) Okinawa6 mm
Carychiella sibiricum (C.A. Westerlund, 1897) Japan, Hokkaido
Melampus sincaporensis L. Pfeiffer, 1855 Philippines, Bohol9 mm
Ellobium soricina J.B. Hombron& C.H. Jacquinot, 1848
Laemodonta souverbiei R.P. Montrouzier, 1862 New Caledonia
Cassidula sowerbyana (J.F. Gmelin, 1791) Vietnam
Carychium sparnacense (FOSSIL) Deshayes, 1863 †
Zospeum spelaeum (E.A. Rossmässler, 1839) Italy, Treviso1 mm
Ellobium stagnale D'Orbigny, 1835 Panama17 mm
Carychium starobogatovi (FOSSIL) Steklov, 1966 †
Laemodonta striata (R.A. Philippi, 1846) Hawaii
Marinula striata N.H. Odhner, 1924 New Zealand, Stewart Island4 mm
Melampus striatus W.H. Pease, 1861 Philippines, Bohol