MolluscaBase name details
original description
Pilsbry, H. A. (1904). Mexican land and freshwater mollusks. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 55: 761-789, pls. 47-54 [1903]., available online at http://biodiversitylibrary.org/page/6601088
page(s): 775, pl. 50, fig. 6-6a [details]