Preston, H. B. (1909). New land and freshwater shells from West Africa. <em>The Annals and Magazine of Natural History.</em> (8) 4 (20): 87-91, pl. 4. London. [1 August]., available online athttps://www.biodiversitylibrary.org/page/22097460 page(s): 90, pl. 4, fig. 9. [details]
original descriptionPreston, H. B. (1909). New land and freshwater shells from West Africa. <em>The Annals and Magazine of Natural History.</em> (8) 4 (20): 87-91, pl. 4. London. [1 August]., available online athttps://www.biodiversitylibrary.org/page/22097460 page(s): 90, pl. 4, fig. 9. [details]