MolluscaBase name details
original description
Dall, W. H. (1923). Notes on <i>Drupa</i> and <i>Morula</i>. <em>Proceedings of the Academy of Natural Sciences, Philadelphia.</em> 75: 303-306., available online at https://www.jstor.org/stable/pdf/4063885.pdf [details]
basis of record
Severns, M. (2011). Shells of the Hawaiian Islands - The Sea Shells. <em>Conchbooks, Hackenheim.</em> 564 pp. [details]