Publication Pratt (1876): summary

Pratt, W.H. 1876. Description of a Unio shell found on the south bank of the Mississippi River, opposite the Rock Island Arsenal, in 1870. Proceedings of the Davenport Academy of Natural Sciences 1. https://www.biodiversitylibrary.org/page/27895139.

Unio lunulatus Pratt, 1876 = Quadrula quadrula

(correct name for Unio unul atus Pratt, 1876)
Pratt, 1876. Proc. Davenport Acad. Nat. Sci. 1: 168, pl. 31, fig. 1a-b [as ‘unul atus’; corrected in Errata].

Unio unul atus Pratt, 1876 = Quadrula quadrula

(incorrect original spelling of Unio lunulatus Pratt, 1876)
Pratt, 1876. Proc. Davenport Acad. Nat. Sci. 1: 168.