MolluscaBase name details
original description
Preston, H.B. (1911). Descriptions of nine new species of terrestrial Mollusca from Naivasha, British East Africa. Revue de Zoologie Africaine, 1 (2): 218-221, pl. 11. Bruxelles [31 August]., available online at https://www.biodiversitylibrary.org/page/32992082
page(s): 220, pl. 11, fig. 7. [details]