MolluscaBase taxon details
original description
(of Helix ayresiana Newcomb, 1861) Newcomb, W. (1861). Descriptions of new species of snails. <em>Proceedings of the California Academy of Sciences.</em> 1(2): 103-104., available online at https://www.biodiversitylibrary.org/page/3837025
page(s): 103-104 [details]
original description
(of Helminthoglypta ayresiana lesteri T. D. A. Cockerell, 1938) Cockerell, T. D. A. (1938). A Pleistocene snail from San Miguel Island, California. <em>The Nautilus.</em> 52(1): 24-25., available online at https://www.biodiversitylibrary.org/page/8284524 [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
Cockerell, T. D. A. (1937). <i>Helminthoglypta ayresiana</i> on San Miguel Is., Cal. <em>The Nautilus.</em> 51(2): 71-72., available online at https://www.biodiversitylibrary.org/page/9203293 [details]