Jeffreys, J. G. (1884). On the Mollusca procured during the 'Lightning' and 'Porcupine' expeditions 1868-70 (Part VII). <em>Proceedings of the Zoological Society of London.</em> 1884: 111-149, pl. 9-10., available online athttp://www.biodiversitylibrary.org/page/28689962 page(s): 128; pl. 9 fig. 9 [details]
original descriptionJeffreys, J. G. (1884). On the Mollusca procured during the 'Lightning' and 'Porcupine' expeditions 1868-70 (Part VII). <em>Proceedings of the Zoological Society of London.</em> 1884: 111-149, pl. 9-10., available online athttp://www.biodiversitylibrary.org/page/28689962 page(s): 128; pl. 9 fig. 9 [details]