original descriptionJeffreys J.G. (1870). Mediterranean Mollusca. <em>Annals and Magazine of Natural History.</em> ser. 4, 6: 65-86., available online athttp://biodiversitylibrary.org/page/29404572 page(s): 77 [details]
additional sourceJeffreys, 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): 115 [details]