original description
Pilsbry, H. A. (1935). Western and southwestern Amnicolidae and a new <i>Humboldtiana</i>. <em>The Nautilus.</em> 48(3):91-94., available online at https://www.biodiversitylibrary.org/page/8520928
page(s): 93 [details]
basis of record
InvertEBase. (2018). Authority files of U.S. and Canadian land and freshwater mollusks developed for the InvertEBase (InvertEBase.org) project. [details]
From editor or global species database