MolluscaBase taxon details
original description
(of Helicopsis orbis H. Beck, 1838) Beck, H. H. (1838). Species novarum in indice molluscorum praesentis aevi musei Principis Christiani Frederici ab autore propositarum characteres breves. Hafniae (= København): 1-8. [June]., available online at https://biodiversitylibrary.org/page/32058146
page(s): 2 [details]
basis of record
Baker, H. B. (1940). Zonitid snails from Pacific Islands, Part 2. 2. Hawaiian genera of Microcystinae. <em>Bernice P. Bishop Museum Bulletin.</em> 165: 1-201, 42 pls. [details] Available for editors [request]