MolluscaBase taxon details
original description
(of Gonyodiscus bryanti nigromontanus Pilsbry, 1924) Pilsbry, H. A. (1924). Some Alleghenian forms of the land-snail genus <i>Gonyodiscus</i>. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 76: 417-421.
page(s): 419, figs. 2c, 3c [details]
original description
(of Helix (Patula) perspectiva var. carinata Gratacap, 1901) Gratacap, L.P. (1901). A catalogue of the Binney and Bland collection of the terrestrial air-breathing mollusks in the American Museum of Natural History, with enumeration of types and figured specimens, and supplementary notes. Bulletin of the American Museum of Natural History, 14: 335-403, plates 41-46.
page(s): 358 [details]
original description
(of Discus nigrimontanus var. tuberculatus Kutchka, 1938) Kutchka, G. M. (1938). New varieties of <i>Anguispira</i> and <i>Discus</i>. <em>The Nautilus.</em> 52(1): 11-14, pl. 2., available online at https://www.biodiversitylibrary.org/page/8284509
page(s): 14, pl. 2 [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]