Sphaerium ranae W.S.S. Van Benthem-Jutting,1927
Sphaerium regulare G. Mandahl-Barth, 1954
Pisidium reticulatum J.G.J. Kuiper, 1966
Sphaerium rhomboideum T. Say, 1822
Sphaerium rivicola W.E. Leachin J.B.P.A. Lamarck, 1815
Pisidium rotundatum T. Prime, 1852
Pisidium sanguinichristi D.W. Taylor, 1987
Pisidium scutulatum V. Sterki, 1906
Sphaerium securis T. Prime, 1852
Sphaerium simile T. Say, 1817
Eupera simoni (F.P. Jousseaume, 1889)
Pisidium simplex V. Sterki, 1905
Eupera singleyi (H.A. Pilsbry, 1889)
Sphaerium solidum N.A.J. Normand, 1844
Pisidium sterkianum H.A. Pilsbry, 1897
Pisidium stewarti H.B. Preston, 1909
Pisidium stoliczkanum B. Prashad, 1933
Sphaerium striatinum J.B.P.A. Lamarck, 1818
Sphaerium stuhlmanni E.C. Von Martens, 1897
Eupera sturanyi (L. Waagen, 1905)
Pisidium subgranum (Z.V. Slugina& Y.I. Starobogatov, 1994)
Pisidium subterraneum (V.I. Zhadin, 1932)
Sphaerium subtransversum T. Prime, 1860
Pisidium subtruncatum A.W. Malm, 1855
Pisidium sumatranum E.C. Von Martens, 1897
Pisidium sundanum B. Rensch, 1934
Pisidium supinum A. Schmidt, 1850
Pisidium taraguyense C.F. Ituarte, 2000
Pisidium tasmanicum J.E. Tenison-Woods, 1876
Sphaerium tatiarae (B.C. Cotton& F.C. Godfrey, 1938)
Pisidium tenuilineatum A. Stelfox, 1918
Sphaerium titicacence (H.A. Pilsbry, 1924)
Sphaerium transversum T. Say, 1829
Sphaerium triangulare (T. Say, 1829)
Eupera triangulum G. Mandahl-Barth, 1973