original description
Cooke, C. M. (1917). Some new species of <i>Amastra</i>. <em>Occasional Papers of the Bernice P. Bishop Museum.</em> 3(3): 221-250, pls 5-7 [A-C]., available online at https://www.biodiversitylibrary.org/page/28586917
page(s): 236, pl. A, fig. 4 [details]
additional source
Cowie, R. H., Evenhuis, N. L. & Christensen, C. C. (1995). <i>Catalog of the Native Land and Freshwater Molluscs of the Hawaiian Islands</i>. vi + 248 pp. [3 June]. Leiden (Backhuys Publishers).
page(s): 97 [details]
From editor or global species database
Type locality Hawaii Island, Kapulehu, about three miles north of Huehue and nearly the same elevation [details]