MolluscaBase name details
original description
(of Helix lalloensis 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): 111 [details]
basis of record
Pilsbry, H. A. (1891-1892). <i>Manual of conchology, structural and systematic, with illustrations of the species</i>. Ser. 2, Pulmonata. Vol. 7: Helicidae, vol.5. pp 1-225, pls 1-61. Philadelphia, published by the Conchological Section, Academy of Natural Sciences. [pp. 1-64, pls. 1-15, Aug. 3, 1891; pp. 65-128, pls. 16-30, Nov. 3, 1891; pp. 129-192, pls. 31-45, Jan. 30, 1892; pp. 193-225, pls. 46-61, Apr. 25, 1892]. , available online at https://biodiversitylibrary.org/page/1102230
page(s): 136, pl. 26, figs. 2-3; pl. 51, fig. 16 [details]