Pisidium adamsi Prime, 1851
+ Pisidium affine Sterki, 1901
+ Pisidium sargenti Sterki, 1901
+ Pisidium sphaericum Sterki, 1912
+ Pisidium deflexum Sterki, 1922
Pisidium aequilaterale [sic] Prime, 1851
Pisidium amnica (Müller, 1774)
Pisidium casertanum (Poli, 1791)
+ Pisidium cinereum Alder, 1838
+ Cyclas (Pisidium) abditum Haldeman, 1841
+ Cyclas minor Mighels & Adams, 1842
+ Pisidium steenbuchi Möller, 1842
+ Pisidium roseum Scholtz, 1843
+ Pisidium regulare Prime, 1852
+ Pisidium noveboracense Prime, 1858
+ Pisidium occidentale Newcomb, 1861
+ Pisidium politum Sterki, 1895
+ Pisidium randolphii Roper, 1896
+ Pisidium trapezoideum Sterki, 1896
+ Pisidium roperi Sterki, 1898
+ Pisidium streatori Sterki, 1901
+ Pisidium strengii Sterki, 1902
+ Pisidium ashmuni Sterki, 1903
+ Pisidium complanatum Sterki, 1903
+ Pisidium rowelli Sterki, 1903
+ Pisidium cuneiforme Sterki, 1903
+ Pisidium atlanticum Sterki, 1905
+ Pisidium proximum Sterki, 1906
+ Pisidium subrotundum Sterki, 1906
+ Pisidium friersoni Sterki, 1906
+ Pisidium neglectum Sterki, 1906
+ Pisidium abditum huachucanum Pilsbry & Ferriss, 1906
+ Pisidium superius Sterki, 1907
+ Pisidium succineum Sterki, 1907
+ Pisidium albidum Sterki, 1911
+ Pisidium dispar Sterki, 1911
+ Pisidium alleni Sterki, 1912
+ Pisidium columbianum Sterki, 1913
+ Pisidium furcatum Sterki, 1913
+ Pisidium nevadense Sterki, 1913
+ Pisidium noveboracense var. elevatum Sterki, 1916
+ Pisidium ovum Sterki, 1916
+ Pisidium hannai Sterki, 1916
+ Pisidium fabale Sterki, 1916
+ Pisidium parodoxum Sterki, 1922
+ Pisidium griseolum Sterki, 1922
+ Pisidium orcasense Sterki, 1922
+ Pisidium lucidum Sterki, 1923
+ Pisidium mirum Sterki, 1923
Pisidium compressum Prime, 1851
Pisidium conventus Clessin, 1877
+ Pisidium abyssorum Sterki, 1898
+ Pisidium clessini Surbeck, 1899
+ Pisidium tornense Odhner, 1908
+ Pisidium pusillum B.B. Woodward, 1913
+ Pisidium hendersoni Sterki, 1923
Pisidium cruciatum Sterki, 1895
Pisidium dubium (Say, 1816)
+ Cyclas (Phymesoda) equalis Rafinesque, 1820
+ Cyclas (Pisidium) abruptum Haldeman, 1841
+ Pisidium virginicum Prime, 1865
Pisidium fallax Sterki, 1896
+ Pisidium kirklandi Sterki, 1899
Pisidium ferrugineum Prime, 1851
+ Pisidium (Fossarina) hibernicum Westerlund, 1894
+ Pisidium medianum Sterki, 1899
+ Pisidium costatum Sterki, 1903
+ Pisidium vexum Sterki, 1916
Pisidium henslowanum (Sheppard, 1825)
+ Pisidium supinum Schmidt, 1850
Pisidium idahoense Roper, 1890
Pisidium insigne Gabb, 1868
Pisidium lilljeborgi Clessin, 1886
+ Pisidium scutellatum Sterki, 1896
+ Pisidium lilljeborgi form cristatum Sterki, 1928
Pisidium milium Held, 1836
Pisidium nitidum Jenyns, 1832
+ Pisidium contortum Prime, 1858
+ Pisidium pauperculum Sterki, 1896
+ Pisidium splendidulum Sterki, 1898
+ Pisidium handwerki Sterki, 1899
+ Pisidium tenuissimum Sterki, 1901
+ Pisidium minusculum Sterki, 1906
+ Pisidium glabellum Sterki, 1913
+ Pisidium lermondi Sterki, 1913
+ Pisidium latchfordi Sterki, 1916
+ Pisidium limpidum Sterki, 1922
+ Pisidium prognathum Sterki, 1922
Pisidium obtusale Pfeiffer, 1821
+ Pisidium ventricosum Prime, 1851
+ Pisidium rotundatum Prime, 1852
+ Pisidium vesiculare Sterki, 1896
Pisidium punctiferum (Guppy, 1867)
+ Pisidium punctatum Sterki, 1895
+ Pisidium singleyi Sterki, 1898
+ Pisidium limatulum Sterki, 1905
+ Pisidium inornatum Sterki, 1911
+ Pisidium tenuilineatum Stelfox, 1918
Pisidium subtruncatum Malm, 1855
+ Pisidium marci Sterki, 1909
+ Pisidium overi Sterki, 1913
+ Pisidium apiculatum Sterki, 1922
Pisidium ultramontanum Prime, 1865
Pisidium variabile Prime, 1851
+ Pisidium cicer Prime, 1858
+ Pisidium decisum Sterki, 1922
+ Pisidium probum Sterki, 1923
Pisidium walkeri Sterki, 1895
+ Pisidium walkeri var. mainense Sterki, 1898
Sphaerium corneum (Linné, 1758)
Sphaerium fabale (Prime, 1851)
Sphaerium lacustre (Müller, 1774)
+ Cyclas ryckholti Normand, 1844
+ Cyclas rosacea Prime, 1852
+ Cyclas jayensis Prime, 1852
+ Sphaerium lenticula Prime, 1862
+ Sphaerium raymondi Cooper, 1892
+ Musculium winkleyi Sterki, 1909
+ Musculium pusillum Sterki, 1910
+ Musculium declive Sterki, 1912
Sphaerium nitidum Clessin in Westerlund, 1876
+ Sphaerium uintaense Call, 1886
+ Sphaerium walkeri Sterki, 1901
Sphaerium occidentale Prime, 1860
+ Cyclas ovalis Prime, 1853
Sphaerium partumeium (Say, 1822)
+ Cyclas elevata Haldeman, 1841
+ Cyclas truncata Linsley, 1845
+ Sphaerium contractum Prime, 1865
+ Calyculina hodgsonii Sterki, 1902
+ Calyculina ferrissii Sterki, 1902
+ Musculium orbiculare Sterki, 1913
Sphaerium patella (Gould, 1850)
+ Sphaerium primeanum Clessin, 1878
Sphaerium rhomboideum (Say, 1822)
Sphaerium securis (Prime, 1851)
+ Cyclas sphaerica Prime, 1853
+ Musculium parvum Sterki, 1909
+ Musculium australe Sterki, 1916
Sphaerium striatinum (Lamarck, 1818)
+ Cyclas triangularis Say, 1829
+ Cyclas staminea Conrad, 1834
+ Cyclas (Pisidium) dentata Haldeman, 1841
+ Cyclas flava Prime, 1852
+ Cyclas emarginata Prime, 1852
+ Cyclas acuminata Prime, 1852
+ Cyclas modesta Prime, 1852
+ Cyclas solidula Prime, 1852
+ Cyclas aurea Prime, 1852
+ Sphaerium vermontanum Prime, 1861
+ Sphaerium tumidum Baird, 1863
+ Sphaerium spokani Baird, 1863
+ Sphaerium lilycashense Baker, 1898
+ Sphaerium jalapensis Pilsbry, 1904
+ Sphaerium hendersoni Sterki, 1906
+ Sphaerium pilsbryanum Sterki, 1909
+ Sphaerium ohiense Sterki, 1913
+ Sphaerium torsum Sterki, 1916
+ Sphaerium declive Sterki, 1922
+ Sphaerium notatum Sterki, 1927
Sphaerium sulcatum (Lamarck, 1818)
+ Cyclas similis Say, 1817
+ Sphaerium crassum Sterki, 1901
+ Sphaerium lineatum Sterki, 1910
+ Sphaerium fallax Sterki, 1930
Sphaerium transversum (Say, 1829)
+ Sphaerium pallidum Gray, 1856
+ Sphaerium subtransversum Prime, 1860
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