original description
(of Helix simodae Jay, 1856) Jay, J. C. (1857 ["1856"]). Report on the shells collected by the Japan Expedition together with a list of Japan shells. In: Perry, M. C.; Hawks, F. L. (eds). Narrative of the expedition of an American squadron to the China Sea and Japan, performed in the year 1852, 1853 and 1854, under the command of Commodore M. C. Perry, United States Navy, by order of the Government of the United States. Vol. 2. Tucker, Washington, pp. 289–297, pls. 1-5., available online at http://biodiversitylibrary.org/page/33621049
page(s): 294, plate 5, figs 1-6. [details]
original description
(of Helix nimbosa Crosse, 1868) Crosse, H. (1868). Diagnoses molluscorum novorum. <em>Journal de Conchyliologie.</em> 16(3): 277-279., available online at https://biodiversitylibrary.org/page/15135472
page(s): 277 [details]
basis of record
Minato, H. (1988). A systematic and bibliographic list of the Japanese land snails. H. Minato, Shirahama, 294 pp., 7 pls.
page(s): 180 [details]
From editor or global species database
From other sources