NO. 1701. yORTHWE8T PACIFIC IHOrODS—RICHARDSOy. 97 



margins of the second, third, and fourth segments are produced on 

 each side in a small lobe, beneath which the epimera are conspicuous 

 each in the form of two small triangular processes. On the dorsal 

 surface of the fourth segment, close to the posterior margin, are four 

 small tubercles, two on either side of the median line, in longitudinal 

 series. The last three segments gradually decrease a little in length, 

 with the tubercles arranged, two on either side of the median line, in 

 longitudinal series on each segment. The epimera project at the sides 

 in the form of large triangular processes, one on each side of the 

 segment. 



The abdomen is com^wsed of two short segments anterior to the 

 large terminal segment, all of which appear to be coalesced. The 

 first two segments have each two transverse rows of small tubercles 

 on the dorsal surface. In both segments the lateral margins are pro- 

 duced on either side in a small triangular process. The terminal seg- 

 ment is produced to an acute triangular point and has two triangular 

 processes on either side of the lateral margin, a pair at the base, and 

 a pair about the middle of the segment. The first four pairs of legs 

 are furnished w^ith long hairs ; the last three pairs are ambulatory. 



The marsupium consists of two pairs of plates, as is also true of A. 

 caeca and A. granulata^ the anterior pair having been overlooked in 

 previous examinations of these two species. 



Only one specimen comes from station 4815, on the way from 

 Hakodate, Japan, to Ebisu, Sado Island, Sea of Japan, at Niigata 

 Light, S. 25° E., 21.5 miles (lat. 38° 16' N.; long. 138° 52' E.) at a 

 depth of 70 fathoms in dark green sand. 



Type-specimen.— Q'^i. No. 39508, U.S.N.M. 



Genus ARCTURUS Latreille. 



ARCTURUS HIRSUTUS Richardson. 



Arcturus hirsutm Richardson, Proc. U. S. Nat. Museum, vol. 27, 1904, pp. 41^3. 



Localities. — Station 4769, on " Bowers Bank," Bering Sea, at lat. 

 54° 30' 40" X.; 179° 14' E.; station 4770, at lat. 54° 31' N.; 

 long. 179° 15' E. ; station 4771, at lat. 54° 30' N. ; long. 179° 17' E. ; 

 and station 4772, at lat. 54° 30' 30" N.; long 179° 14' E.; station 

 4780, on the way from "" Petrel Bank," Bering Sea, to McDonald Bay, 

 Agattu Island, Aleutians, by the passage east of Semisopochnoi and 

 Amchitka Islands, at lat. 52° 01' X.; long. 174° 39' E. ; station 4781, 

 at lat. 52° 14' 30" N.; long. 174° 13' E.; station 4784, on the way 

 from Chichagof Harbor, Attn Island, around eastern end and south 

 of Attu Island, to Preobrajeniya Bay, Medni Island, Komandorski 

 Islands at East Cape, Attu Island, S. 18° W., 4 miles (lat. 52° 55' 40" 

 N. ; long. 173° 26' E.) ; station 4786, on the way from Preobrajeniya 

 Bay, Medni Island, to Nikolski Bay, Bering Island, by the passage 



Proc.X.M.vol.37— 09 7 



