2 8 CRUSTACEA MALACOSTRACA. 



& Bouvier), Nova Scotia and southwards along the United States to 37 8' N. L.; between ca. 42 and 

 39 N. L. it has several times been taken at considerable depths, from 300 to 640 fm. On the north- 

 west and west coast of Alaska: Point Barrow, Franklin Point and Norton Sound, a form has been 

 taken which was determined by Murdoch as E. trigonocheirus Stimps.; the differences this author 

 mentions between this species and ".. pubescens and E. Kroyerf are very small, but as I have not 

 seen specimens I am unable to prove that E. trigonocheirus should be included, though for myself I 

 feel sure of it. Similarly, I think that Eup. capillatiis Ben., Eup. Brandti Ben. and Eup. Dalli Ben. 

 could only be called species on a modern, American idea of species and that they will all prove to 

 belong to Eup. pubescens. The three species named and E. trigonocheirus were all taken at Alaska, 

 the Aleutians, Unalaska and in the Bering Sea; with this is in agreement that Brandt notes Eup. pubes- 

 cens from Kamtschatka. 



The species is boreal-arctic, not pronouncedly arctic, as (i) it seems to be lacking in the Kara 

 Sea, at Franz Joseph's Land and Jan Mayen, (2) it is very rare at East Greenland, from which only 

 a single, small specimen has been brought, (3) it appears so far south as in the Irish Sea and south- 

 west of Ireland, (4) it has several times been taken by the "Ingolf" in depths from 300 to 486 fm. but 

 always in the warm area only, and this applies also to its occurrence in the Fseroe Channel and on 

 the east coast of the United States, where it goes down to 640 fm. 



Remarks. I have twice endeavoured to separate E. pubescens Kr. from E. Kroyeri Smith in 

 my large material, but without success, and though it is easy enough to refer some specimens to one 

 or other of the two forms other specimens show so many transitional stages, that I must follow G. O. 

 Sars and A. Milne-Edwards & Bouvier in putting them together. Concerning the 4 "species" found at 

 Alaska and the Aleutians, see above. - - The largest specimen I have seen is from 0nundar Fjord on 

 the north-west side of Iceland; it was taken in 1012 fm. and its right chela is 31 mm. long and 

 16 mm. broad. 



18. Eupagurus tricarinatus Norm. 



1869. Pagurus tricarinatus Norman, Rep. Brit. Assoc. Adv. Science for 1868, p. 264. 

 ! 1885. Eupagurus G. O. Sars, Den Norske Nordh.-Exped. Zool. Crust. I, p. n, PI. II, figs. 8 10. 



1892. variabilis A. Milne-Edwards & Bouvier, Ann. d. Sc. Nat. Zool., 7 Ser. T. XIII, p. 217. 



1896. E. L. Bouvier, Feuille d. Jeunes Natur., Ill Ser., 26= Ann., p. 149, figs. I7&i8. 



! 1900. A. Milne-Edwards & Bouvier, Exped. Scient. du Travailleur et du Talisman, 



Crust. Dec., L, p. 230, PI. XXVI, figs. 4 12. 



Occurrence. 61 14' N. L., 2 13' E. L., 82 fm., temp. 6-8, "Michael Sars" 1902 (Ad. Jensen); 2 spec. 

 Distribution. "In deep water" at the Shetland Isles (Norman); the great ridge W. of Norway 

 (63 10' N. L., 5 25' E. L.) in 98 fm. (G. O. Sars); south-west of Ireland (Caiman); it has also been taken 

 at numerous localities in the Atlantic off the coasts of France, Spain, Portugal and northern Africa 

 southwards to 2i5i'N. L,. and in depths from 62 76 fm. down to 740 fm.; lastly, it is known from 

 the Mediterranean at Sardinia and west end of Sicily (Senna). 



Remarks. The two specimens seen by me certainly belong to Eup. variabilis A. Milne-Edw. 

 & Bouv. Eup. tricarinatus Norm, was taken in deep water near the locality from which my specimens 



