@article{NARMS:SourceID:131407, author = {Jeffreys, J. G. }, journal = {Proceedings of the Zoological Society of London}, title = {On the Mollusca procured during the 'Lightning' and 'Porcupine' expeditions 1868-70. (Part VI)}, url = {http://www.biodiversitylibrary.org/page/28679878}, year = {1883} }