Descrição original: Carpenter, W.B. & J.G. Jeffreys. (1871). Report on deep sea research carried out during the months of July, August and September 1870, in H.M. surveying-ship ‘Porcupine. Proceedings of the Royal Society of London. 19(125): 146-221., available online at http://books.google.com/books?id=WOZJAAAAcAAJ&pg=PA146 page(s): 156