1898.] EICHARDSOX — FOUR NEW SPECIES OF KOCIXELA. 



13 



Fig. 3. — Head. 



and three blunt ones are found oa the merus. The gressorial feet 

 are long and slender and covered with spines. 



Type. — The type specimen was found off Shumagin Bank, Alaska, 

 Station ^il'h^^ 625 fathoms (U. S. Nat. Mus., No. 20086). 



Roci?iela cubensis, sp. nov. Figs. 3, 4. 



Outline of body oval, surface smooth. 



Head with rounded lateral margins. Its anterior margin is \)Yo- 

 duced forward in a large rounded projection, whose 

 breadth is equal to its length, and whose upper sur- 

 face is deeply concave with upturned edges. This 

 projection extends forward for about half its length 

 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 first 

 antenna reaches the posterior margin of the 

 head ; its flagellum contains six articles. 

 The second antenna extends to the posterior 

 margin of the third thoracic segment ; its 

 flagellum contains fifteen articles. 



The thoracic segments are subequal in 

 length. The epimera are long and narrow, 

 with very acute posterior angles. 



The first segment of the abdomen is almost 

 entirely concealed by the last thoracic seg- 

 ment. The fifth is likewise covered at the 

 sides by the fourth segment. The last 

 abdominal segment is triangular in shape 

 with a rounded posterior margin. The 

 outer branch of the uropods is very broad 

 and oar-shaped, with a rounded extremity. 

 The inner branch is long and slender, of equal 

 breadth throughout its length and rounded 

 on its posterior margin. Tlie inner branch is 

 the longer one. Both are fringed with hairs. 



In the prehensile legs of this species the 

 basis presents a row of tubercles on its superior margin 

 two spines on this propodus and three on the merus. 

 sorial legs are but slightly spinulose. 



Fig. 4. — a. Ro cine la 

 ctibensts, (j^, X 2^. 

 d. Leg of first pair, 

 X 45- ^. Leg of 

 fourth pair, X 43- 



There are 

 The gres- 



