Bivalvia

nominal species Unio tumida Sowerby in Malcolmson, 1840

Unio tumida Sowerby in Malcolmson, 1840 = nomen dubium

Sowerby in Malcolmson, 1840. Trans. Geol. Soc. London 5: pl. 47, figs. 11-12.
(homonym of Unio tumidus Philipsson in Retzius, 1788; renamed Unio malcolmsoni Hislop, 1860)

Taxonomic Opinions

+ Parreysia malcolmsoni (Hislop, 1860) — Bolotov et al., 2022: Table 2, Supplementary Note 2.