original description
(of Helicarion nyasanus E. A. Smith, 1899) Smith, E. A. (1899). On a collection of land-shells from British Central Africa. <em>Proceedings of the Zoological Society of London.</em> 1899: 579–592., available online at https://www.biodiversitylibrary.org/page/30951626
page(s): 582, pl. 33, figs 9, 10. [details]
original description
(of Helicarion nyasanus var. excellens Melvill & Standen, 1907) Melvill, J. C. & Standen, R. (1907). Notes on a collection of terrestrial and fluviatile Mollusca, made in North-Eastern Rhodesia, during 1905, by Mr. Sheffield A. Neave, M.A., B.Sc. <em>Memoirs and proceedings of the Manchester Literary & Philosophical Society.</em> 51 (4): 1-16, 1 unnumbered plate. [20 February]., available online at https://www.biodiversitylibrary.org/page/34063251
page(s): 9, fig. 7. [details]
basis of record
Connolly, M. (1939). A monographic survey of South African non-marine Mollusca. <em>Annals of the South African Museum.</em> 33: 1-660.
page(s): 120 [details] Available for editors [request]
additional source
Bruggen, A. C. van. (1988). A record of the genus <i>Cerastua</i> (Mollusca, Gastropoda Pulmonata: Enidae) from Zambia, with a preliminary list of the terrestrial molluscs of that country. <em>Proceedings of the Koninklijke Nederlandse Akademie van Wetenschappen.</em> 91(1): 1–17.
page(s): 13 [details]
From editor or global species database