MolluscaBase taxon details
original description
(of Helix arrosa var. stiversiana J. G. Cooper, 1875) Cooper, J.G. (1875). On shells of the west slope of North America. Proceedings of the California Academy of Sciences, (1) 6: 14-27.
page(s): 16 [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]