original description
(of Helix cyathus L. Pfeiffer, 1846) Pfeiffer, L. (1846). Descriptions of fourteen new species of <i>Helix</i>, belonging to the collection of H. Cuming, Esq. <em>Proceedings of the Zoological Society of London.</em> 13 (153) [“1845”]: 123–125. London [28. February]., available online at https://www.biodiversitylibrary.org/page/12862619
page(s): 123 [details]
original description
(of Helix arcuata L. Pfeiffer, 1847) Pfeiffer, L. (1847). Descriptions of 38 new species of land-shells, in the collection of Hugh Cuming, Esq. <em>Proceedings of the Zoological Society of London.</em> 14 (166) [“1846”]: 109–116. [26 January]., available online at https://biodiversitylibrary.org/page/12862759
page(s): 110 [details]
basis of record
Semper, C. (1870-1885). <i>Reisen im Archipel der Philippinen, Theil 2. Wissenschaftliche Resultate. Band 3, Landmollusken</i>. Wiesbaden: Kreidel. [1-80, pls 1-7 (1870); 81-128 (1873); 129-168 (1874); 169-224 (1877); 225-264, pls 19–20, 22–23 (1880); 265–290, pl. 21 (1882); 291-327, pls 24–27 (1885)] (publication dates after Zool. Record)., available online at https://biodiversitylibrary.org/page/32630046
page(s): 92, pl. 11, fig. 24 [details]
additional source
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): 36 [details]
From editor or global species database