ISOPODS OF NORTH AMERICA. 



207 



on either side of a keeled center; the outer branch of the uropods is 

 almost twice as broad as the inner branch; they are about equal in 

 length. Both are fringed with hairs and indis- 

 tinctly erenulate. 



The prehensile legs are stout and short. There 

 are four spines on the propodus and six on the 

 merus, besides numerous hairs. The gressorial 

 legs are likewise stout and furnished with spines 

 and hairs. 



The specimen described came from Alaska, off 

 Unimak Island, station 

 3225, 85 fathoms (Cat. 

 No. 20088, U.S.N.M.). 

 Distribution. One 

 specimen was found off 

 San Luis Obispo Bay, 

 California, station 3195, 

 252 fathoms; one off 

 Esteros Bay, California, 

 station 3194, 92 fath- 

 oms, and another at 

 Puget Sound, Washing- 

 ton, station 3067, 82 

 fathoms. 



The specimens from the coast of California are smaller in size and of 

 very much lighter color than the other specimens. They are similar 

 in other respects. 



A specimen from Ja- 

 pan, one from Esteros 

 Bay, and one from San 

 Luis Obispo Bay, Cali- 

 fornia, have four spines 

 on the merus of the pre- 

 hensile legs. 



This species differs 

 from R. modesta Hansen 

 in the larger eyes, which 

 are also closer together 

 than in that species, the differently shaped head and the wider outer 

 branch of the uropoda. 



FIG. 205. ROCINELA ANGUS- 

 TATA. UROPOD. x 6i. 

 (FROM JAPAN.) 



FIG. 206. ROCINELA ANGUS- 

 TATA, a, MALE, SLIGHTLY 



REDUCED. 6, LEG OF FIRST 



PAIR, x 4. c, LEG OF 



FOURTH PAIR. X 4. 



FlG. 207. ROCINELA ANGUS- 

 TATA. THIRD LEG. x 7. 

 (FROM JAPAN.) 



FIG. 208. ROCINELA 

 TATA. ABDOMEN AND LAST 

 THORACIC SEGMENT. X 1|. 

 ( FROM JAPAN.) 



