MolluscaBase name details
original description
Pilsbry, H. A. (1905). Mollusca of the southwestern United States, I: Urocoptidae; Helicidae of Arizona and New Mexico. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 57: 211-290, plates 11-27., available online at https://www.biodiversitylibrary.org/page/6331573
page(s): 241-242, pl. 15, figs. 80-91 [details]