Preston, H. B. (1914). Characters of three new species of Ennea from Southern Nigeria. <em>Proceedings of the Malacological Society of London.</em> 11 (2): 134-136. London [20 August]., available online athttps://www.biodiversitylibrary.org/page/15715661 page(s): 135, textfig. [details]
original descriptionPreston, H. B. (1914). Characters of three new species of Ennea from Southern Nigeria. <em>Proceedings of the Malacological Society of London.</em> 11 (2): 134-136. London [20 August]., available online athttps://www.biodiversitylibrary.org/page/15715661 page(s): 135, textfig. [details]