A Catalogue of Recent Cephalopoda. 209 



10. The Japanese Ecgion. — The coasts of these islands have 

 yielded so many remarkable Cephalopods that it seems ad- 

 visable to separate them, provisionally at all events, as a 

 distinct region. 



11. The Australian Region. — The coast of the whole Aus- 

 tralian continent is here regarded as forming a single region ; 

 as above remarked, it is quite probable that the northern 

 portion of it should be placed in the last division but one, 

 but so little information regarding the species from that 

 district has come into my hands, that I forbear from drawing 

 any line. Fischer makes an arbitrary boundary at the Tropic 

 of Capricorn. 



12. The NeiD Zealand Region. — The Cephalopod fauna of 

 these islands is so peculiar that it seems advisable to separate 

 them from the Australian region, to which they are no doubt 

 nearly allied, though the number of forms proved to be 

 common to both is very few. 



13. The Pacific Insular Region. — The shores of the various 

 archipelagos in the Pacific Ocean seem to be inhabited by 

 numerous Cephalopods which are quite distinct from the 

 pelagic forms inhabiting the open ocean. But few collections 

 have as yet been made of these — not enough to enable any 

 general conclusions regarding their affinities to be drawn. 



14. The Californian Region stretches from the peninsula 

 of Alaska to the Isthmus of Panama ; probably it will even- 

 tually be necessary to subdivide it, but so few forms have 

 been described from that coast, that this course hardly seems 

 advisable at present. From the coast between Alaska and 

 Kamtschatka no Cephalopods are known to me; probably 

 they will be found, like the other MoUusca from that region, 

 to be of Arctic types. 



15. The Peruvian Region. — The northern boundary of this 

 province may be taken at the Isthmus of Panama, and the 

 southern at about the northern limit of Patagonia. 



16. The Patagonian Region includes the extremity of South 

 America, both on the eastern and western coasts. 



17. The Arctic Region. — The coasts of Greenland, Spitz- 

 bergen, and the seas within the Arctic circle, so far as they 

 have been explored, constitute this region. 



VOL IX. o 



