Traits taxon details
original description
(of ) Dall, W. H. (1866). On a species of <i>Helix</i> from California, supposed to be new. <em>American Journal of Conchology.</em> 2(4): 328-329, plate 21., available online at https://www.biodiversitylibrary.org/page/15841294 page(s): 328, pl. 21, fig. 4 [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]
additional source
Baker, H. B. (1931). Neartic Vitreine land snails. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 83: 85-117, pls. 13-20. page(s): 90 [details] Available for editors 
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