nominal species Pisidium plenum Prime, 1862
‘Lewis MSS 1855’ Prime, 1862, Ann. Lyc. Natur. Hist. 7: 94. [nomen nudum]
(intro'd as syn of Cyclas abdita Haldeman, 1841)
= Pisidium casertanum Taxonomic Opinions
+ Pisidium (Cyclocalyx) casertanum (Poli, 1791) — (Burch, 1975)
+ Pisidium abditum Haldeman — (Prime, 1895)
+ Pisidium abditum Haldeman — (Prime, 1870)
+ Pisidium abditum Haldeman — (Prime, 1865)
+ Pisidium abditum Hald. — (Prime, 1862)
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