original description
(of Helicina hakodadiensis Hartmann, 1890) Hartman, W. D. (1890). Description of new species of shells. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 42: 284-290., available online at https://www.biodiversitylibrary.org/page/6390090
page(s): 286 [details]
original description
(of Helicina sadoensis Pilsbry & Y. Hirase, 1903) Pilsbry, H. A. & Hirase, Y. (1903). New land shells of the Japanese Empire. <em>The Nautilus.</em> 16(11): 128-130. [February 28]., available online at https://www.biodiversitylibrary.org/page/1754409
page(s): 128-129 [details]
basis of record
Sysoev, A. V. & Schileyko, A. A. (2009). Land snails and slugs of Russia and adjacent countries. <em>Sofia/Moskva (Pensoft).</em> 312 pp., 142 plates. [June] [= Pensoft Series Faunistica No 87].
page(s): 10, Fig. 1A [details] Available for editors [request]
additional source
Minato, H. (1988). A systematic and bibliographic list of the Japanese land snails. H. Minato, Shirahama, 294 pp., 7 pls.
page(s): 6 [details]
From editor or global species database