MolluscaBase name details
original description
(of Pleurotoma (Thesbia) monoceros R. B. Watson, 1881) Watson, R.B. (1881). Mollusca of H.M.S. Challenger Expedition. Parts VIII, IX, X. <em>Journal of the Linnean Society, Zoology.</em> 15: 388-475., available online at https://biodiversitylibrary.org/page/37088539 [details]
redescription
Watson, R. B. (1886). <i>Report on the Scaphopoda and Gasteropoda collected by H.M.S. Challenger during the years 1873-76</i>. Report on the Scientific Results of the Voyage of H.M.S. Challenger during the years 1873–76. Zoology 15 (part 42): 1-756, pls 1-50. , available online at https://www.biodiversitylibrary.org/page/2004568
page(s): 365, pl. 20 fig. 1 [details]