MolluscaBase taxon details
original description
(of Helix vexillaris L. Pfeiffer, 1855) Pfeiffer, L. (1855). Descriptions of thirty-eight new species of land shells, from the collection of H. Cuming. <em>Proceedings of the Zoological Society of London.</em> 23 (291): 111–119. London [13 August]., available online at https://www.biodiversitylibrary.org/page/30748004 page(s): 113 [details] 
original description
(of Helix phthisica L. Pfeiffer, 1856) Pfeiffer, L. (1856-1857). Zur Fauna der Admiralitäts-Inseln. <em>Malakozoologische Blätter.</em> 3: 237-248 (publication dates: 237-240, Dec 1856; 241-248, Jan 1857)., available online at https://www.biodiversitylibrary.org/page/15865204 page(s): 239 [details]
basis of record
Delsaerdt, A.G.J. (2012). Land snails of the Solomon Islands. Vol. II Camaenidae. Ancona: L'Informatore Piceno. 178 pp., 14 pls. page(s): 69 [details]
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