MolluscaBase taxon details
original description
(of Helix capsella A. Gould, 1851) Gould, A.A. (1851). The terrestrial air-breathing mollusks of the United States, and the adjacent territories of North America. Vol. 2. Little, Brown and Company, Boston. 1-366.
page(s): 239, pl. 29a, fig. 1 [details]
original description
(of Helix rotula A. Gould, 1848) Gould, A. A. (1848). New shells from the south western states collected by J. Bartlett for the late Dr. Amos Binney. <em>Proceedings of the Boston Society of Natural History.</em> 3: 37-41., available online at https://www.biodiversitylibrary.org/page/8870375#page/45/mode/1up
page(s): 38 [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
Roscoe, E. J. (1952). <i>Paravitrea</i> in Kansas. <em>The Nautilus.</em> 65(4): 144., available online at https://www.biodiversitylibrary.org/page/8524947 [details]