MolluscaBase name details
additional source
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): 112, Fig. 54C [details] Available for editors [request]
additional source
Stearns, R. E. C. (1903). Mollusks ocurring in southern California. <em>The Nautilus.</em> 16(12): 133-134., available online at https://www.biodiversitylibrary.org/page/1754393#page/165/ [details]