MolluscaBase name details
original description
(of Helix sphaerica G. B. Sowerby I, 1841) Sowerby, G. B. I. (1841). Descriptions of new species of the family Helicidae, collected by Mr. H. Cuming in the Philippine Islands (continuation). <em>Proceedings of the Zoological Society of London.</em> 9: 24–26. [October]., available online at https://biodiversitylibrary.org/page/30679646
page(s): 26 [details]
basis of record
Möllendorff, O. F. von. (1898). Verzeichnis der auf den Philippinen lebenden Landmollusken. <em>Abhandlungen der Naturforschenden Gesellschaft zu Görlitz.</em> 22: 26-208., available online at https://biodiversitylibrary.org/page/58468236
page(s): 120; note: Moellendorff (1898: 120) lists mutatio simplex, mutatio tigrina, and mutatio castanea with no descriptions, comments, or author attributions. These are considered nomen nudum here. [details]
additional source
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): 172, 173, pl. 39, figs. 82-84 [details]