138 



RATHBUN 



more transverse, making the palm appear longer. The abdominal 

 carinae are higher and thinner, especially on the third segment ; the in- 

 fero-posterior angle of the fourth segment may have a small spine. The 

 abdomen is more elongate, notably the sixth segment. 



Dimensions. Large male, length 55.7 mm., length of carapace 13.6 mm. 



Distribution. Arctic coast of Alaska and Siberia southward to Sitka 

 and Kurile Islands; Greenland (Kroyer). Beach to 47 fathoms. 



In the U. S. National Museum this species is represented by numer- 

 ous specimens ranging from the Arctic coast of Alaska and Siberia south- 

 ward via Bering Strait to Bering Sea, lat. 56 12' oo" N. Within these 

 limits it is very abundant and was taken at 2 1 stations of the Albatross, 

 at 8 stations by Lieutenant G. M. Stoney, U. S. N., at 7 stations by W. H. 

 Dall, at 2 stations by the U. S. R. S. Corwin, off the mouth of the Yukon 

 by E. W. Nelson, and at Cape Smith by the Point Barrow Expedition. 



Also taken at the following localities : 

 Shahafka Cove, Kadiak, 12-14 fathoms (W. H. Dall). 

 Sitka Harbor, 15 fathoms (W. H. Dall). 

 Avacha Bay, Kamchatka (L. Stejneger and Albatross; also recorded by 



Stimpson). 



Rakovaya Bay, Avacha Bay (Albatross). 

 Off Kamchatka, 12-13 fathoms (Albatross stations 3776, 3777, 3779, 



378o). 

 Off Iturup Island, Kurile Islands, 14-18 fathoms (Albatross stations 3652, 



3653). 

 Off Robben Island, Okhotsk Sea, 18-20 fathoms, stations 3646, 3647. 



NECTOCRANGON DENTATA Rathbun. 



Nectocrangon lar SMITH, Trans. Conn. Acad. Arts Sci., v, 61, 1879 (part); 

 not N. /0r(Owen). RATHBUN, The Fur Seals and Fur-Seal Islands of the 

 North Pacific Ocean, Pt. ill, 556, 1899 (part). HOLMES, Occas. Papers 

 Calif. Acad. Sci., vii, 178, 1900 (part). ORTMANN, Proc. Acad. Nat. Sci. 

 Phila., 1901, 164 (part). 



Nectocrangon dentata RATHBUN, Proc. U. S. Nat. Mus., xxiv, 892, 1902. 



FlG. 76. Nectocrangon dentata. 9 (X ii>- Station 3216. a. Dorsal view of 

 carapace and abdomen, b. Side view of carapace and part of abdomen. 



