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Published online by Cambridge University Press: 15 September 2014
The collection of Cephalopoda made by H.M.S. “Challenger,” though not extensive, is of great interest, not only because a considerable number of new species were discovered, but also because several rare forms were found in fresh localities, and because a few specimens (many of them fragmentary) were obtained, which bear interesting relations to those already known.
note * page 95 Oversigt k. dansk. Yid. Selsk. Forhandl., p. 69, 1861.
note * page 98 I have considerable doubt whether this be really one of the specific characters; but as it occurs in both specimens, I have thought it well to rnencion it
note * page 107 Named in honour of Professor Japetus Steenstrup.