Burch, J.B. 1975. Freshwater Sphaeriacean Clams (Mollusca: Pelecypoda) of North America. 96 pp.
‘Say’ Burch, 1975. Freshw. Sphaer. North Amer.: 48.
(error for Cyclas similis Say, 1817)
+ Sphaerium (Limosina) singleyi Pilsbry, 1889
+ Musculium declive Sterki, 1912
+ Cyclas jayensis Prime, 1852
+ Sphaerium lenticula Prime, 1862
+ Musculium pusillum Sterki, 1910
+ Cyclas rosacea Prime, 1852
+ Cyclas ryckholti Normand, 1844
+ Musculium winkleyi Sterki, 1909
+ Musculium rosaceum var. fuliginosum Sterki, 1916
+ Cyclas steinii Schmidt, 1850
+ Sphaerium raymondi Cooper, 1892
+ Musculium truncatum var. albidum Sterki, 1916
+ Cyclas elevata Haldeman, 1841
+ Calyculina ferrissii Sterki, 1902
+ Calyculina hodgsonii Sterki, 1902
+ Musculium orbiculare Sterki, 1913
+ Cyclas truncata Linsley, 1845
+ Musculium truncatum var. angustatum Sterki, 1916
+ Cyclas calyculata C.B. Adams, 1842
+ Cyclas coerulea Prime, 1852
+ Cyclas eburnea Prime, 1853
4 more...
+ Musculium australe Sterki, 1916
+ Cyclas cardissa Prime, 1852
+ Musculium parvum Sterki, 1909
+ Cyclas sphaerica Prime, 1853
+ Cyclas crocea Lewis, 1854
+ Musculium sphaericum var. succineum Sterki, 1916
+ Sphaerium contractum Prime, 1865
+ Cyclas constricta Prime, 1853
+ Musculium transversum form decisum Sterki, 1916
+ Cyclas detruncata Prime, 1852
+ Cyclas gracilis Prime, 1852
+ Sphaerium subtransversum Prime, 1860
+ Pisidium scholtzi var. lapponicum Clessin in Westerlund, 1873
+ Pisidium pusillum Jenyns, 1832
+ Pisidium affine Sterki, 1901
+ Pisidium deflexum Sterki, 1922
+ Pisidium sargenti Sterki, 1901
+ Pisidium sphaericum Sterki, 1912
+ Cyclas nitida Mighels in Mighels & Adams, 1842
+ Cyclas (Pisidium) abditum Haldeman, 1841
+ Pisidium albidum Sterki, 1911
+ Pisidium alleni Sterki, 1912
+ Pisidium ashmuni Sterki, 1903
+ Pisidium atlanticum Sterki, 1905
+ Pisidium cinereum Alder, 1838
+ Pisidium columbianum Sterki, 1913
+ Pisidium complanatum Sterki, 1903
+ Pisidium cuneiforme Sterki, 1903
+ Pisidium dispar Sterki, 1911
73 more...
+ Pisidium altile Prime, 1852
+ Pisidium compressum var. arrosum Sterki, 1905
+ Pisidium compressum var. conferum Sterki, 1905
+ Pisidium compressum var. contrarium Sterki, 1905
+ Pisidium compressum var. coosaense Sterki, 1905
+ Pisidium compressum var. curvatum Sterki, 1916
+ Pisidium fraudulentum Sterki, 1912
+ Pisidium compressum var. illinoisense Sterki, 1916
+ Pisidium compressum var. laevigatum Sterki, 1905
+ Pisidium compressum var. limnicolum Sterki, 1905
7 more...
+ Pisidium aequilaterale Prime, 1865
+ Pisidium fallax var. sepentrionale Sterki, 1898
+ Pisidium fallax var. boreale Sterki, 1899
+ Pisidium fallax var. errans Sterki, 1905
+ Pisidium kirklandi Sterki, 1899
+ Pisidium fallax var. mite Sterki, 1905
+ Pisidium fallax pressum F.C. Baker, 1928
+ Pisidium medianum var. clarum Sterki, 1916
+ Pisidium (Fossarina) hibernicum Westerlund, 1894
+ Pisidium medianum Sterki, 1899
+ Pisidium depressum Herrington, 1954
+ Pisidium medianum var. minutum Sterki, 1899
+ Pisidium ohiense Sterki, 1903
+ Pisidium pilula Sterki, 1922
+ Pisidium vexum Sterki, 1916
+ Pisidium lilljeborgi form cristatum Sterki, 1928
+ Pisidium scutellatum Sterki, 1896
+ Pisidium pusillum B.B. Woodward, 1913
+ Pisidium amoenum Herrington, 1954
+ Pisidium glabellum Sterki, 1913
+ Pisidium handwerki Sterki, 1899
+ Pisidium latchfordi Sterki, 1916
+ Pisidium lermondi Sterki, 1913
+ Pisidium limpidum Sterki, 1922
+ Pisidium minusculum Sterki, 1906
+ Pisidium pauperculum Sterki, 1896
+ Pisidium prognathum Sterki, 1922
11 more...
+ Pisidium alpicola Suter, 1889
+ Pisidium apiculatum Sterki, 1922
+ Pisidium marci Sterki, 1909
+ Pisidium overi Sterki, 1913
+ Pisidium masci Ellis, 1962
+ Pisidium variabile var. brevius Sterki, 1906
+ Pisidium cicer Prime, 1858
+ Pisidium decisum Sterki, 1922
+ Pisidium probum Sterki, 1923
+ Pisidium grande ‘Whittemore, in litt.’ Prime, 1865
+ Pisidium variabile var. hybridum Sterki, 1906
+ Pisidium variabile var. magnum Sterki, 1916
+ Pisidium mirabile Clessin, 1877
+ Pisidium palustre ‘Lewis, in litt.’ Prime, 1870
+ Pisidium ovum Sterki, 1916
+ Pisidium vesiculare var. striatellum Sterki, 1916
+ Pisidium vesiculare Sterki, 1896
+ Pisidium obtusale Pfeiffer, 1821
+ Pisidium rotundarum Herrington, 1965
+ Corneocyclas tremperi Hannibal, 1912
+ Pisidium walkeri var. mainense Sterki, 1898
+ Pisidium abyssorum Sterki, 1898
+ Pisidium abortivum Sterki, 1916
+ Pisidium hendersoni Sterki, 1923
+ Pisidium abortivum var. exiguum Sterki, 1916
+ Pisidium imbecille Sterki, 1900
+ Pisidium notophthalmi Sterki, 1922
+ Pisidium punctatum var. armatum Sterki, 1905
+ Pisidium hinkleyi Sterki, 1916
+ Pisidium monas Sterki, 1901
+ Pisidium puncatum var. simplex Sterki, 1905
+ Pisidium bakeri Baker, 1900
+ Cyclas (Pisidium) abruptum Haldeman, 1841
+ Cyclas (Phymesoda) equalis Rafinesque, 1820
+ Pisidium virginicum Prime, 1865
+ Cyclas aequalis Lamarck, 1835
+ Pisidium idahoense var. indianense Sterki, 1905
+ Cyclas pallida Prime, 1865
+ Sphaerium occidentale var. amphibium Sterki, 1907
+ Cyclas ovalis Prime, 1853
+ Cyclas alata Leach, 1852
+ Cyclas castanea Prime, 1852
+ Cyclas sulculosa Prime, 1865
+ Cyclas tenuis Prime, 1852
+ Sphaerium uintaense Call, 1886
+ Sphaerium walkeri Sterki, 1901
+ Cyclas nobilis Gould, 1855
+ Sphaerium primeanum Clessin, 1878
+ Cyclas elegans Adams, 1840
+ Sphaerium sulcatum var. albescens Sterki, 1916
+ Sphaerium crassum Sterki, 1901
+ Sphaerium sulcatum dakotense Sterki, 1930
+ Sphaerium sulcatum decisum Brooks & Herrington, 1944
+ Cyclas elliptica Prime, 1870
+ Sphaerium fallax Sterki, 1930
+ Cyclas gigantea Prime, 1852
+ Sphaerium sulcatum var. insigne Sterki, 1916
+ Cyclas (Amesoda) lasmampsis Rafinesque, 1820
+ Cyclas lasmanpsis Lamarck, 1835
8 more...
+ Cyclas acuminata Prime, 1852
+ Cyclas aurea Prime, 1852
+ Sphaerium declive Sterki, 1922
+ Cyclas (Pisidium) dentata Haldeman, 1841
+ Cyclas emarginata Prime, 1852
+ Cyclas flava Prime, 1852
+ Sphaerium hendersoni Sterki, 1906
+ Sphaerium jalapensis Pilsbry, 1904
+ Sphaerium lilycashense Baker, 1898
+ Cyclas modesta Prime, 1852
52 more...