Bivalvia | ... | Unionoidea | Unionidae | Ambleminae | Lampsilini | Potamilus fragilis

nominal species Margarita (Unio) atratus Lea, 1836

Margarita (Unio) atratus Lea, 1836 = Potamilus fragilis

‘Swain.’ Lea, 1836. Synopsis Fam. Naiades: 31.
Lea, 1852. Synopsis Fam. Naiades: 33.
(reference to Unio (Niaa) atrata Swainson, 1823)

Taxonomic Opinions

+ Proptera gracilis (Barnes, 1823) — Haas, 1969: 416.

= Unio atratus Lea — Hanley, 1856: 384, pl. 21, fig. 18.

+ Unio atrata Lea — Hanley, 1843: 199.