Forbes, E. (1838). On the land and freshwater mollusca of Algiers and Bougia. Annals of Natural History. 2 (10): 250-255, pl. 11-12 [plates published in Feb. 1839].
Journal cover reads "1839" but Evenhuis (2003) dated issue 10 (pp. 241-312) as of December 1, 1838 and the supplement (with the plates) as of March 1, 1839