Traits taxon details
original description
(of ) Newcomb, W. (1861). Description of new shells. <em>Proceedings of the California Academy of Sciences.</em> (1)2: 91-94., available online at http://biodiversitylibrary.org/page/3837015 page(s): 91-92 [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
Hanna, G. D. (1927). <i>Helminthoglypta traskii</i> (Newcomb) at "Fort Tejon", Kern County, California. <em>The Nautilus.</em> 41(1): 32-34., available online at https://www.biodiversitylibrary.org/page/8519759 [details]
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