Sphaerium ranae W.S.S. Van Benthem-Jutting, 1927 Indonesia, Maluku Island
Sphaerium regulare G. Mandahl-Barth, 1954 Lake Victoria
Pisidium reticulatum J.G.J. Kuiper, 1966 Mozambique, Zambesi River
Sphaerium rhomboideum T. Say, 1822 Florida
Sphaerium rivicola W.E. Leach in J.B.P.A. Lamarck, 1815 Russia, Tambov16 mm
Pisidium rotundatum T. Prime, 1852 Michigan
Pisidium sanguinichristi D.W. Taylor, 1987 USA, New Mexico
Pisidium scutulatum V. Sterki, 1906 USA, Montana
Sphaerium securis T. Prime, 1852 Florida, Duval County8 mm
Sphaerium simile T. Say, 1817 Canada, Ontario
Eupera simoni (F.P. Jousseaume, 1889) Venezuela, Caracas
Pisidium simplex V. Sterki, 1905 Canada, Great Lakes
Eupera singleyi (H.A. Pilsbry, 1889) Alabama
Sphaerium solidum N.A.J. Normand, 1844 Poland
Pisidium sterkianum H.A. Pilsbry, 1897 Argentina, Rio de la Plata10 mm
Pisidium stewarti H.B. Preston, 1909 Tibet
Pisidium stoliczkanum B. Prashad, 1933 Tibet
Sphaerium striatinum J.B.P.A. Lamarck, 1818 Alabama
Sphaerium stuhlmanni E.C. Von Martens, 1897 Lake Victoria
Eupera sturanyi (L. Waagen, 1905) Congo, Pointe Noire
Pisidium subgranum (Z.V. Slugina& Y.I. Starobogatov, 1994) Russia
Pisidium subterraneum (V.I. Zhadin, 1932)
Sphaerium subtransversum T. Prime, 1860 Mexico
Pisidium subtruncatum A.W. Malm, 1855 Latvia, Vidzerne2 mm
Pisidium sumatranum E.C. Von Martens, 1897 Indonesia, Sumatra
Pisidium sundanum B. Rensch, 1934 Indonesia, Java
Pisidium supinum A. Schmidt, 1850 Latvia, Vidzerne3 mm
Pisidium taraguyense C.F. Ituarte, 2000 Argentina, Corrientes River
Pisidium tasmanicum J.E. Tenison-Woods, 1876 Tasmania
Sphaerium tatiarae (B.C. Cotton& F.C. Godfrey, 1938) Australia, Corangamite
Pisidium tenuilineatum A. Stelfox, 1918 England, Salisbury
Sphaerium titicacence (H.A. Pilsbry, 1924) Bolivia, Lake Titicaca
Sphaerium transversum T. Say, 1829 Florida10 mm
Sphaerium triangulare (T. Say, 1829) Mexico
Eupera triangulum G. Mandahl-Barth, 1973 Zanzibar Island