192 BULLETIN 54, UNITED STATES NATIONAL MUSEUM. 



umch .sniallor than the sixth, and, owing- to the shortness of the seventh 



segment, ends behind about on a line with it, both epimera surpassing 



the first segment of the pleon. 



'"Legs of the first pair slender, armed with a long slender dactylus, 



much curved near its base; propodus expanded with a large palmar 



lobe armed with a tuarginal row of 

 " ,1^^ eight curved spines; carpus short, 



with a single cur\'ed palmar spine. 

 Legs of the second and third pair 

 much like the fii'st, but with only 

 six spines on the propodus. Legs 

 of the fourth and posterior pairs 

 slender, armed with spines princi- 

 pally at the distal ends of the 

 ischium, merus, and carpus. 



'■'First segment of the pleon very 

 short and nearly concealed b}' the 

 thoracic segments, narrower than 

 the next three segments, which are 

 al)out equal, acutely produced at 

 the sides so as to resemble in shape 

 the seventh epimeron ; fifth segment 

 narrower than fourth, but some- 

 what longer on the median line; 

 telson semi -oval, regular!}" rounded 

 behind and ciliated. Uropods equal- 

 ing the telson; inner angle of basal 

 segment produced, about one-third 

 the length of the inner ranms, which 

 is Ungulate, rounded b e h i n d , 

 slightly shorter than the outer, and 



less than half as 1)road; outer ramus subovate, spinulose along the 



outer border; 1)oth rami ciliated except near the base. 

 Length, 13.5 mm.; breadth, 6 mm. 

 A single specimen of this species, the only one as yet known, was 



taken at Station 305, latitude 32"" 18' 20" north, longitude 73- 43' west, 



from a depth of 252 fathoms."" — Haroek." 



ROCINELA CORNUTA Richardson. 



Rocinela cornuta Richardson, Proc. Amer. Philos. Soc, XXXVII, 1898, p. 12, 

 figs. 1-2; Proc. U. S. Nat. Mus., XXI, 1899, p. 827; Ann. Mag. Nat. Hist. 

 (7), IV, 1899, p. 169; American Naturalist, XXXIV, 1900, p. 219. 



Locality. — Off Shumagin Bank, Alaska. 

 Dej)tli. — 625 fathoms. 



c;er). 



VIEW 



.—Rocinela oculata' (Aftek Hae- 

 a, Ventral view, x 4. h, Dorsal 

 X 4. c, Leg of first pair. :■: 10. 



«Bull. :\Iu8. Corap. Zool. Harvard College, XI, No. 4, Pt. 23, 1883, pp. 97-? 



