Jeffreys, J. G. (1883). On the Mollusca procured during the 'Lightning' and 'Porcupine' Expeditions 1868-70. (Part V). <em>Proceedings of the Zoological Society of London.</em> 1882: 656-687, pl. 49-50., available online athttp://www.biodiversitylibrary.org/page/28679082 page(s): 661, pl. 49 fig. 5 [details]
original descriptionJeffreys, J. G. (1883). On the Mollusca procured during the 'Lightning' and 'Porcupine' Expeditions 1868-70. (Part V). <em>Proceedings of the Zoological Society of London.</em> 1882: 656-687, pl. 49-50., available online athttp://www.biodiversitylibrary.org/page/28679082 page(s): 661, pl. 49 fig. 5 [details]