Traits taxon details
original description
(of ) Preston, H. B. (1913). Diagnoses of new species and varieties of agnathous Mollusca from Equatorial Africa. <em>Proceedings of the Zoological Society of London.</em> 81 (2): 194-218, pl. 32-35. [30 May]., available online at https://www.biodiversitylibrary.org/page/31994693 page(s): 216, pl. 34, figs 4, 4a. [details]
basis of record
Adam, W.; Bruggen, A. C. van; Van Goethem, J. L. (1993). Études sur les mollusques terrestres de l'Afrique, à partir des notes de feu le Dr William Adam. 1. <i>Ptychotrema</i> (<i>Haplonepion</i>) Pilsbry, 1919 (Gastropoda Pulmonata: Streptaxidae). <em>Bulletin de l'Institute Royal des Sciences Naturelles de Belgique, Biologie.</em> 63: 137-157., available online at https://biblio.naturalsciences.be/rbins-publications/bulletin-of-the-royal-belgian-institute-of-natural-sciences-biologie/63-1993/biologie-1993-63_137-157.pdf page(s): 149 [details]
|