Bergh, L. S. R. (1884). Malacologische Untersuchungen. <em>In: Semper C, ed. Reisen im Archipel der Philippinen.</em> theil 3, heft 15. Wiesbaden: Kreidel, 647–754, plates 69–76., available online athttps://www.biodiversitylibrary.org/page/14376063 page(s): 655-657, pl. 69 fig. 2-7 [details]
original descriptionBergh, L. S. R. (1884). Malacologische Untersuchungen. <em>In: Semper C, ed. Reisen im Archipel der Philippinen.</em> theil 3, heft 15. Wiesbaden: Kreidel, 647–754, plates 69–76., available online athttps://www.biodiversitylibrary.org/page/14376063 page(s): 655-657, pl. 69 fig. 2-7 [details]