282 
Proceedings of the Royal Society 
Genera. 
Previously 
known species. 
New species. 
Teleoteutliis , Yerrill ( = Onychia , Leseur), 1 
Mastigoteuthis, Yerrill, . 
Histiopsis, Hoyle, 
Calliteuthis , Yerrill, 
Cranchia , Leach, 
Taonius , Steenstrup, 
1 
1 
1 
1 
1 
1 
Nautilus , Linn 4, 
1 
As usually happens the largest genera received the most additions, 
e.g ., Sepia and Loligo ; while the new genera are each represented 
only by a single specimen. 
All the Sepias obtained by the Expedition were got between 
Stations 163 and 232, — that is to say, during the cruise from the 
eastern coast of Australia, through the Malay Archipelago to Japan ; 
and when this is taken in connection with the fact that of some fifty 
previously known species, no less than thirty come from the same 
area, it becomes obvious that this Indo-Pacific region is the metro- 
polis of the genus. It is further remarkable that most of the new 
Loligos come from the same region. 
One of the most curious of the new forms is a small creature from 
the Southern Ocean, which has been called Bathyteuthis abyssicola 
(fig. 2) ;* it measures about 5 cm. in length, excluding the tentacles; 
the body is subcylindrical, tapering to a blunt point behind, where 
are situated two small rounded fins. The head is broad, with pro- 
minent eyes, and there is a very large oral membrane provided with 
suckers. The arms are very short, the longest not quite reaching 
1 cm., and the suckers are minute and arranged biserially ; the 
tentacles about equal the body in length, and have no clubs, but 
gradually taper to a point armed with numerous very small suckers 
like those of many Sepice. The funnel is provided with a valve, 
and the pen resembles that of Ommastrephes (see p. 308 posted). 
The structure of this form seems to adapt it for life at great depths, 
and to justify the belief that it really came from the depth reached 
* This seems to be at all events congeneric with a form which Professor 
Yerrill has recently dredged in the North Atlantic, and named Benthoteuthis 
megalops {Trans. Connect. Acad., vol. vi. part 2, page 402, pi. xliv. fig. 1). 
