ISOPons OF NORTH AMKKFC^A. 



197 



ROCINELA CUBENSIS Richardson. 



Itixiiifld eiihciisis IJi(ii.\Ki)S(i\, 1 

 13-14; IVor. T. S. Nat. Mns 



(..•. AiiHT. I'liilos. Soc, XXXVII, iSitH, i>i). 

 XXIII, nun, p. 52.-5. 



lM(i. 183.— RO CI- 

 NE I, A CUBEN.SIS. 

 IlE.M). 



Lociility. — Off llahjuia. 

 ])e))ih. —148 f atlionis. 

 Outline of body oval, surface smooth. 



Head with rounded lateral maryins. Its anterioi- niai-oin is j)i-()duced 

 forward in a lari>e rounded projection, the bi-eadth of 

 which is ecjual to its h^notji, uiid the u})pei' sui'fa('edeei)lv 

 concave with uptui'ned ed<i'(\s. This })r()jection extends 

 forward for about iialf its lengtli and then upward, the 

 change in direction being- gradual. Eyes large and 

 composed of ten rows of ocelli. Two small tubercles 

 are situated between the eyes, and in the middle of the 

 head and back of these is an arc-shaped depression. The tirst antenna 

 reaches the posterior margin of the head; its flagellum is composed of 

 six articles. The second antenna extends to the 

 posterior margin of the third thoracic segment; 

 its tiagellum is composed of fifteen articles. 



The thoracic segments are subequal in length. 

 The epimera are long" and narrow, with very acute 

 posterior angles. 



The tirst seg-ment of the abdomen is almost en- 

 tirely concealed l)y the last thoracic 

 segment. The tifth is likewise 

 covered at the sides by the fourth 

 segment. The last abdominal seg-- 

 ment is triangular in sliape with a 

 rounded post(M'ior margin. Tiie 

 outer branch of tlie uropods is \erv 

 broad an<l oar-shaped, with a 

 rounded extremity. The inner 

 branch is long and slender, of equal 

 breadth thi'oughout its length and 

 rounded on its posterior margin. 

 The inner branch is the longer one. 

 Both are fringed with hairs. 



In the prehensile legs of this spe- 

 cies the basis presents a row of tubercles on the superior margin. 

 There are two spines on the propodus, one on the carpus, and two on 

 the menis. The gressorial legs ar-e but slightly spinulose. 



Type. — The tj'pe specimen was found off Habana, latitude 23 11' 

 north, longitude 82° 19' 6" west, Station 2341, 143 fathoms (I'.S.N.M., 

 Cat. No. 20087). 



Fig. 184.— R o c i n e i, a 

 CUBENSIS. o, Male. > 2i. 

 h. Leg of first pair^ 

 X 4}. fi, Leg of fouktii 

 pair. X 4^ 



Fig. 185.— Roc i- 

 nela cubensis. 

 m axilliped. 



X39. 



