Smith, E. A. 1881a. Account of the Zoological collections made during the survey of the H.M.S. 'Alert' in the Straits of Magellan and on the coast of Patagonia. IV. Mollusca and Molluscoidea. Proceedings of the Zoological Society of London 1881 22-44, pls. 3-5. [True date: -- Jun 1881.] {Included species}