original description
(of Helicina mediana Gassies, 1870) Gassies, J. B. (1870). Diagnoses d'espèces inédites provenant de la Nouvelle-Calédonie. <em>Journal de Conchyliologie.</em> 18(1): 140-150., available online at https://www.biodiversitylibrary.org/page/15160559
page(s): 145-146 [details]
original description
(of Helicina novaecaledoniae Baird, 1873) Baird, W. (1873). Shells. Pp. 432-454, pls 36-42, In: Brenchley J.L. (ed.), <i>Jottings during the Cruise of the H. M. S. Curaçoa among the South Sea Islands in 1865</i>. London: Longmans, Green, and Co. xxviii + 487 pp., pls 1-50, fold outs. , available online at https://www.biodiversitylibrary.org/page/22831297
page(s): 450 [details]
original description
(of Helicina nehoueensis Hartman, 1889) Hartman, W. D. (1889). New species of shells from New Hebrides. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 1889: 91-94, pl. 5; Philadelphia., available online at https://www.biodiversitylibrary.org/page/1849410
page(s): 93, pl. 5, fig. 9 [details]
basis of record
Richling I. (2017). Clarification of the identity of <i>Helicina mediana</i> Gassies, 1870 from New Caledonia (Gastropoda, Neritimorpha, Helicinidae). <em>Zootaxa.</em> 4247(1): 65-67., available online at https://doi.org/10.11646/zootaxa.4247.1.8 [details]
From editor or global species database