original description
(of Cyclostoma incomptum G. B. Sowerby I, 1850) Sowerby, G. B. I. (1850). Descriptions of some additional species of <i>Cyclostoma</i>. In G. B. Sowerby II (ed.), <i>Thesaurus conchyliorum, or monographs of genera of shells</i>. Vol. 2 (11): 157*–168*, pls 31A, 31B. London, privately published. , available online at https://www.biodiversitylibrary.org/page/43937435
page(s): 160*, pl. 31A, figs. 298, 299 [details]
additional source
Simone, L. R. L. (2006). <i>Land and Freshwater Molluscs of Brazil</i>. Editora Grafíca Bernardi, FAPESP. São Paulo, 390 pp.
page(s): 45 [details]
From editor or global species database
Classification New combination herein, for consistency with the treatment of Incidostoma as a separate genus by Thompson (2011) [details]