MolluscaBase name details
original description
Möllendorff, O. F. von. (1899). Binnen-Mollusken aus Westchina und Central-Asien. <em>Ezhegodnik Zoologicheskago Muzeia Imperatorskoi Akademii Nauk.</em> 4(1): 46-144, pls. 2-8., available online at https://www.biodiversitylibrary.org/page/8351820
page(s): 76 [details]
original description
(of Helix ravidula Heude, 1882) Heude, P. M. (1882-1890). Notes sur les mollusques terrestres de la vallée du Fleuve Bleu. <em>Mémoires concernant l'histoire naturelle de l'Empire chinois.</em> 1 (2): 2 + 1-87, pls. 12-21 [1882]; 1 (3): 89-132, pls. 22-32 [1885]; 1 (4): 125-188, pls. 33-43 [1890]., available online at https://www.biodiversitylibrary.org/page/34061405
page(s): 27, plate 20, fig. 12 [details]