Bivalvia | ... | Unionidae | Unioninae | Unionini | Unionina | Unio crassus

nominal species Unio batavus var. nanus de Joannis, 1859

Unio batavus var. nanus de Joannis, 1859 = Unio crassus

de Joannis, 1859. Ann. Soc. Linn. Maine-et-Loire 3: pl. 9, fig. 8. [in part]
(misidentified reference to Unio nana Lamarck, 1819)

Taxonomic Opinions

+ Unio mancus var. amnicus Ziegler — Germain, 1931: 726.

+ Unio (Melasiana) melas Coutagne — Germain, 1904: 255.