nominal species Pisidium sphaeriiforme Clessin in Martens, 1874

Pisidium sphaeriiforme Clessin in Martens, 1874 = species iquirenda

Clessin in Martens, 1874. Puteshestvie v Turkestan. Tom II 11(1): 38, pl. 3, fig. 33. [nomen dubium]
Clessin, 1875. Conch. Cab. 9(3): 45, pl. 5, figs. 7-9.

= Pisidium sphaeriiforme Clessin — Clessin, 1875: 45, pl. 5, figs. 7-9.

= Pisidium sphaeriiforme nov. sp. Cless. — Martens, 1874: 38, pl. 3, fig. 33.