MUSSELpdb
Taxonomy
Species & Genus Richness of
freshwater mussels
by Taxonomy
Species & Genus Richness of
freshwater bivalves
by Family
Geography
Species Richness & Endemism of
freshwater mussels
by Geography
Data last updated
Tue 02 June 2026
Bivalvia | ... | Unionidae | Unioninae | Unionini | Unionina | Unio crassus
nominal species Unio batavus var. longus de Joannis, 1859
Unio batavus var. longus de Joannis, 1859 = Unio crassus
(intro'd as intra-sp. of Mya batava Maton & Rackett, 1807; homonym of Unio longus Philippi, 1869)
de Joannis, 1859. Ann. Soc. Linn. Maine-et-Loire 3: 288, pl. 10, fig. 3.
Taxonomic Opinions
+ Unio batavus Maton et Rackett — Germain, 1931: 727.
= Unio batavus var. longus Nobis — de Joannis, 1859: 288, pl. 10, fig. 3.
