original description
Pilsbry, H. A. (1954). Some Californian and Mexican land mollusks. <em>The Nautilus.</em> 67(3): 81-82, pl. 8, figs. 1, 4, text-fig. 2., available online at https://www.biodiversitylibrary.org/page/8514711
page(s): 82, pl. 8, fig. 4 [details]
basis of record
Thompson, F. G. (2011). An annotated checklist and bibliography of the land and freshwater snails of México and Central America. <em>Florida Museum of Natural History Bulletin.</em> 50(1): 1-299. [details] Available for editors
From editor or global species database