Englesia Prime, 1852
‘Leach’ Prime, 1852, Boston J. Nat. Hist. 6(3): 348.
(error for Euglesia Leach, 1852)

Gallileja Prime, 1852
‘da Costa’ of Authors.
Prime, 1852, Boston J. Nat. Hist. 6(3): 348.
Prime, 1865, Smithsonian Misc. Coll. (145): 59.
Prime, 1870, Amer. J. Conch. 5: 164.
(error for Galileja Costa, 1840)

Physemoda Prime, 1852
‘Rafinesque’ of Authors.
Prime, 1852, Boston J. Nat. Hist. 6(3): 348.
Prime, 1860, Proc. Acad. Nat. Sci. 12: 267.
Prime, 1865, Smithsonian Misc. Coll. (145): 59.
(error for Phymesoda Rafinesque, 1820)

Pisidium adamsii Stimpson, 1851
‘Prime, MS’ Stimpson, 1851, Shells of New England: 16.
Prime, 1852, Boston J. Nat. Hist. 6(3): 352, pl. 11, figs. 1-3.
Prime, 1865, Smithsonian Misc. Coll. (145): 63, fig. 63.
(new name for Cyclas nitida Mighels & Adams, 1842)

Pisidium ventricosum Prime, 1851
Prime, 1851, Proc. Boston Soc. Nat. Hist. 4: 68.
Prime, 1852, Boston J. Nat. Hist. 6(3): 355, pl. 11, figs. 16-18.
Prime, 1865, Smithsonian Misc. Coll. (145): 72, figs. 79-80.

Pisidium kurtzii Prime, 1852
Prime, 1852, Proc. Boston Soc. Nat. Hist. 4: 162.
Prime, 1852, Boston J. Nat. Hist. 6(3): 361, pl. 12, figs. 5-7.

Pisidium zonatum Prime, 1852
Prime, 1852, Proc. Boston Soc. Nat. Hist. 4: 162.
Prime, 1852, Boston J. Nat. Hist. 6(3): 364, pl. 12, figs. 17-19.

Pisidium compressum Prime, 1852
Prime, 1852, Proc. Boston Soc. Nat. Hist. 4: 164.
Prime, 1852, Ann. Lyc. Natur. Hist. 5: 219, pl. 6.
Prime, 1852, Boston J. Nat. Hist. 6(3): 356, pl. 11, figs. 13-15.
Prime, 1865, Smithsonian Misc. Coll. (145): 64, figs. 67-68.

Pisidium notatum Prime, 1852
Prime, 1852, Boston J. Nat. Hist. 6(3): 365, pl. 12, figs. 20-22.

Pisidium obscurum Prime, 1852
Prime, 1852, Proc. Boston Soc. Nat. Hist. 4: 161.
Prime, 1852, Boston J. Nat. Hist. 6(3): 359.

Pisidium altile Prime, 1852
‘Anthony’ C.B. Adams, 1847, Cat. Gen. Sp. Adams: 29. [nomen nudum]
‘Anthony’ Prime, 1852, Boston J. Nat. Hist. 6(3): 353, pl. 11, figs. 10-12.
‘Anthony, in litt.’ Prime, 1865, Smithsonian Misc. Coll. (145): 65 [as ‘Cyclas altilis’]. [nomen nudum]

Pisidium rotundatum Prime, 1852
Prime, 1852, Proc. Boston Soc. Nat. Hist. 4: 164.
Prime, 1852, Boston J. Nat. Hist. 6(3): 357, pl. 11, figs. 19-21.
Prime, 1865, Smithsonian Misc. Coll. (145): 72, figs. 81-82.

Pisidium equilaterale Prime, 1852
Prime, 1852, Boston J. Nat. Hist. 6(3): 366, pl. 12, figs. 23-25.
Prime, 1865, Smithsonian Misc. Coll. (145): 63, figs. 65-66 [as ‘æquilaterale’].

Pisidium nucleolus Prime, 1852
‘Moricand, MS’ Prime, 1852, Boston J. Nat. Hist. 6(3): 368. [nomen nudum]

Pisidium ferrugineum Prime, 1852
Prime, 1852, Proc. Boston Soc. Nat. Hist. 4: 162.
Prime, 1852, Boston J. Nat. Hist. 6(3): 362, pl. 12, figs. 8-10.
Prime, 1865, Smithsonian Misc. Coll. (145): 71, figs. 77-78.

Pisidium arcuatum Prime, 1852
Prime, 1852, Boston J. Nat. Hist. 6(3): 364, pl. 12, figs. 14-16.

Pisidium riseum Prime, 1852
‘Scholtz’ Prime, 1852, Boston J. Nat. Hist. 6(3): 368.
(error for Pisidium roseum Scholtz, 1843)

Pisidium regulare Prime, 1852
Prime, 1852, Boston J. Nat. Hist. 6(3): 363, pl. 12, figs. 11-13.

Pisidium variabile Prime, 1852
Prime, 1852, Proc. Boston Soc. Nat. Hist. 4: 163.
Prime, 1852, Boston J. Nat. Hist. 6(3): 351, pl. 11, figs. 7-9.
Prime, 1865, Smithsonian Misc. Coll. (145): 66, figs. 69-70.

Pisidium abditum Haldeman

Pisidium acutum Pf.

Pisidium adamsii Nobis
+ Cyclas nitida Mighels & Adams, 1842

Pisidium altile Anthony

Pisidium amnicum Jenyns
+ Cyclas palustris Draparnaud, 1806
+ Cyclas obliqua Lamarck, 1818

Pisidium arcuatum Nobis. (Fossil).

Pisidium australe Pfeiffer

Pisidium casertanum Poli

Pisidium cinereum Alder

Pisidium compressum Nobis

Pisidium diaphanum Haldeman

Pisidium dubium Gould
+ Cyclas (Pisidium) abruptum Haldeman, 1841

Pisidium duplicatum Pfeiffer

Pisidium equale Rafinesque

Pisidium equilaterale Nobis

Pisidium ferrugineum Nobis

Pisidium gassiesianum Gassies

Pisidium henslowanum Jenyns
+ Cyclas appendiculata Turton, 1831

Pisidium kurtzii Nobis

Pisidium limosum Gassies

Pisidium minimum Studeman [sic]

Pisidium minus Stimpson
+ Cyclas minor Mighels & Adams, 1842

Pisidium nitidum Jenyns

Pisidium normandianum Dupuy

Pisidium notatum Nobis

Pisidium nucleolus Moricand

Pisidium obscurum Nobis

Pisidium obtusale Pfeiffer

Pisidium pfeifferi Ziegler
+ Pisidium inflatum Porro, 1838

Pisidium pulchellum Jenyns
+ Pisidium fontinale Pfeiffer, 1821
+ Pisidium jenynsii Macgillivroy, 1843
+ Pisidium johannis MacGillivray, 1844

Pisidium pusillum Jenyns

Pisidium regulare Nobis

Pisidium riseum [sic] Scholtz

Pisidium rotundatum Nobis

Pisidium semen Menke

Pisidium supinum Schmidt

Pisidium tenellum Gould
+ Pisidium rubellum Prime, 1852

Pisidium variabile Nobis

Pisidium ventricosum Nobis

Pisidium zonatum Nobis