MolluscaBase taxon details
original description
(of Helix (Nanina) scorpio A. Gould, 1846) Gould, A. A. (1846). Descriptions of new shells, collected by the United States Exploring Expedition. <em>Proceedings of the Boston Society of Natural History.</em> 2: 141-145, 148-152 [July]; 153-156, 159-162, 165-167 [August]; 170-173, 175-176 [September]; 177-179, 180-184, 185-187, 190-192 [November]., available online at https://www.biodiversitylibrary.org/page/9490825
page(s): 178 [details]
original description
(of Nanina casca A. Gould, 1852) Gould, A. A. (1852). Mollusca and shells. <em>In: United States Exploring Expedition during the years 1838, 1839, 1840, 1841, 1842 under the command of Charles Wilkes. Boston.</em> 12: 1-510; atlas 1856: 1-16., available online at https://www.biodiversitylibrary.org/page/10991152
page(s): 31, pl. 5, fig. 69a, b. [details]
original description
(of Helix calva A. Gould, 1846) Gould, A. A. (1846). Descriptions of new shells, collected by the United States Exploring Expedition. <em>Proceedings of the Boston Society of Natural History.</em> 2: 141-145, 148-152 [July]; 153-156, 159-162, 165-167 [August]; 170-173, 175-176 [September]; 177-179, 180-184, 185-187, 190-192 [November]., available online at https://www.biodiversitylibrary.org/page/9490825
page(s): 179. [details]