Owen, R. (1835). Mollusca – Cephalopoda Nov. Gen.-
Rossia. (Owen.), pages xcii-xcix. In J. Ross,
Appendix to the narrative of a second voyage in search of a North-West Passage, and of a residence in the Arctic
regions during the years 1829, 1830, 1831, 1832, 1833. (Volume II, Appendix, Natural History), 120 + cxliv pages. London: A.B. Webster.