original description(ofAcmaea calamus polyactina Verco, 1912)Verco, J. C. (1912). Notes on the marine shells of Western Australia, with descriptions of new species. Part II. <em>Transactions of the Royal Society of South Australia.</em> 36: 192–205. page(s): 199 [details]
Present Inaccurate Introduced: alien Containing type locality