Pennant, T. 1777. Crustacea. Mollusca. Testacea. British Zoology 4: 1-154, pls. 1-93. Available electronically.
Pennant, 1777. British Zool. 4: 82, pl. 44, fig. 19.

Pennant, 1777. British Zool. 4: pl. 43, fig. 18.
Lamarck, 1819. Hist. Natur. Anim. sans Vert. 6: 70, sp. 2.
Type(s): POSSIBLE SYNTYPE MNHN_MPL_0028, Habite dans les rivières de l’Angleterre, et probablement du nord de l’Europe [Lives in the rivers of England and Northern Europe probably].
Pennant, 1777. British Zool. 4: 71, pl. 46, fig. 24.
Pennant, 1777. British Zool. 4: ??.