original description(ofCadulus rastridens R. B. Watson, 1879)Watson, R. B. (1879). Mollusca of H.M.S. 'Challenger' Expedition. II. The Solenoconchia, comprising the genera <i>Dentalium</i>, <i>Siphodentalium</i>, and <i>Cadulus</i>. <em>Journal of the Linnean Society of London. Zoology.</em> 14: 506-529., available online athttps://www.biodiversitylibrary.org/page/31858591 page(s): 525 [details]