ISOPODS OF NORTH AMERICA. 



207 



on either side of a keeled center; the out(M- branch of the uropods is 

 ahnost twice as broad as the inner branch; thcv are abont etjual in 

 length. Both are hinoiMl with hairs and indis- 

 tinctly crenulate. 



The prehensile legs are stout and short. There 

 are four spines on the propodus and six on tlu^ 

 inerus, besides nunun'ous hairs. Tln^ gressorial 

 legs are likewise stout and rurnishcd with spines 

 and hairs. 



The specimen described came from Alaska, otl 

 Tnimak Island, station 

 o22r>, S5 fathoms (Cat. 

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

 Dixtrlhiitlon . — One 

 specimen was found off 

 San Luis Obispo Ba}', 

 California, station ^^U);"), 

 252 fathoms; one oil' 

 Esteros Bay. California, 

 station 3194, 92 fath- 

 oms, and another at 

 Puget Sound, Washing- 

 ton, station 30 6 7, 82 

 fathoms. 



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

 very nmch 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. iiiodesta Hansen 

 in the larger eyes, which 

 are also closei' together 

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

 branch of the uropoda. 



Fir,. 205.— RociNKLA a n g u s - 



TATA. UKOPOD. X 6;. 



(From .Iai'an.) 



20li.— ROCI .N KLA AXGUS- 

 TATA. (I, Ma LK, SLIGHTLY 



KKDUCED. h, Leg of first 

 PAIR. X 4. c. Leg of 



KOI'RTH PAIR. ■ 1. 



Fig. 207.— Rocinela angts- 

 TATA. Third leg. x 7. 

 (From Japan.) 



Fig. 20.S.— Rocinela angus- 

 TATA. Abdomen and last 

 thoracic segment. X IJ. 

 (From Japan.) 



