MolluscaBase taxon details
original description
(of Trachycystis planulata Preston, 1911) Preston, H.B. (1911). Descriptions of thirty-six new species of land and freshwater shells from British East Africa, chiefly from Mount Kenia and the neighbouring district. The Annals and Magazine of Natural History, (8) 7 (41): 463-476, pl. 11-12. London. [29 April]., available online at https://biodiversitylibrary.org/page/15815183
page(s): 468, pl. 11, fig. 13. [details]
basis of record
Germain, L. (1923). Voyage de M. Guy Babault dans l'Afrique Orientale Anglaise. Résultats scientifiques: Mollusques terrestres et fluviatiles. Paris. Pp. 1–149, pls 1–4.
page(s): 58. [details]