MolluscaBase taxon details
original description
Pilsbry, H. A. (1892-1893). <i>Manual of conchology, structural and systematic, with illustrations of the species</i>. Ser. 2, Pulmonata. Vol. 8: Helicidae, vol. 6. pp 1-314, pls 1-58. Philadelphia, published by the Conchological Section, Academy of Natural Sciences. [pp. 1-48, pls 1-15, 25 July 1892; pp. 49-112, pls 16-27, 16 Nov 1892; pp. 113-160, pls 28-41, 25 Feb 1893; pp. 161-314, pls 42-58, 1 July 1893]. , available online at https://biodiversitylibrary.org/page/23736486
page(s): 254, pl. 32, figs. 23-26 [details]
original description
(of Vallonia americana Ancey, 1893) Sterki, V. (1893). Observations on <i>Vallonia</i>. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 45: 234-279, plate 8.
page(s): 266 [details]
original description
(of Vallonia costata var. minor Sterki, 1893) Sterki, V. (1893). Observations on <i>Vallonia</i>. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 45: 234-279, plate 8.
page(s): 267 [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
Walker, B. (1897). <i>Vallonia parvula</i> and <i>Pupa holzingeri</i>. <em>The Nautilus.</em> 11(7): 82., available online at https://www.biodiversitylibrary.org/page/1774581 [details]
additional source
Cockerell, T. D. A. (1893). <i>Vallonia americana</i> Ancey ms. <em>The Nautilus.</em> 7(8): 94., available online at https://www.biodiversitylibrary.org/page/43044532 [details]