MolluscaBase taxon details
original description
(of Helix dimera Jonas, 1846) Jonas J.H. (1846). Molluskologische Beiträge. <em>Abhandlungen aus dem Gebiete der Naturwissenschaften herausgegeben von dem Naturwissenschaftlichen Verein in Hamburg.</em> 1: 99-130, pls 7-11., available online at https://www.biodiversitylibrary.org/page/33685989
page(s): 123, pl. 11, fig. 19, 19a; note: refers to Proc. Zool Soc London 1843, but no description of this species is there. However, H. dimera Jonas is listed as variety β of Helix jonasi L. Pfeiffer, 1846: 126. See Additional Source. [details]
basis of record
Richardson, L. (1983). Bradybaenidae: Catalog of species. <em>Tryonia.</em> 9: 1-253., available online at https://www.biodiversitylibrary.org/page/57458375
page(s): 150 [details]