TSOPODS OF NORTH AMERICA. 191 



y. Abdomen about its wide as long. Outer branch of uropoda twi(;e as 

 wide as inner branch. Propodus of })reliensile legs armed with four 

 spines. Abdomen narrow when compared with thorax, taj)ering, last 

 segment narrowly rounded. Second antennir extend to the middle 



of the second thoracic segment Rocinela amjustota Richard.son 



I/. Flagellum of second pair of antenme composed of from ten to eleven articles. 

 c. Small tubercles present on the posterior margins of all the segments of the 

 thorax. Propodus of prehensile legs armed with three spines. 



Rocinela tuberculoid Richardson 



c\ No tul)ercles on body. Propodus of prehensile legs unarmed or armed with 



only one spine. 



(/. Terminal segment of abdomen ornamented with a pair of narrow semilunar 



bands, separated by a longitudinal stripe. Propodus of prehensile legs 



unarmed'. Rocinela sujnata Schiu'dte and Meinert 



d'. Terminal segment of abdomen ornamented with a very wide crescentiform 

 band from the posterior border of which three large hastiform stripes 

 project backwards. Propodus of prehensile legs armed with one spine. 



Rocinela aries Schiaxlte and Meinert 



ROCINELA OCULATA Harger. 



Rocinela ocidata Harger, Bull. Mus. Comp. ZooL, Harvard College, XI, No. 4, 

 1883, pp. 97-99, pi. iii, fig. 2-2a; pi. iv, fig. 1. — Richardson, American 

 Naturalist, XXXIV, 1900, p. 219; Proc. U. S. Nat. Mus., XXIII, 1901, p. 523. 



Locality. — Liititude 32"^ 18' 20" north, long-itude 78 -13' west. 



Depth. — 252 fathoms. 



"Body oval, length a little more than twice the breadth, surface 

 sparsel}' punctate. 



"Head su))reniform, produced in front into a truncated process over 

 the bases of the antennulte, yoke-shaped behind, the ocular lobes pro- 

 jecting, upper surface nearly covered with the large eyes in which the 

 ocelli are large and quincuncialh" arranged in ten rows along the long- 

 axis of each eye. Five of these rows meet along the median line. 



"The anteniuihv are slender and scarce!}' attain the tip of the anten- 

 nal peduncle; the basal segment is short and concealed from above; 

 the second is longer than the first; the third is slender, but not as long 

 as the first two together; Hagellum about as long as the peduncle, 

 slender and composed of live segments, of which the first is nmch the 

 longest and the last is the shortest, and does not quite attain the pos- 

 terior border of the eye when the antemnda is reflexed. The antennse 

 surpass the first thoracic segment; the first two segments are very 

 short; the flagellum is about twelve-jointed. 



" First thoracic segment closely adapted to the head in front; fourth 

 segment longest in the median line above; sixth short; seventh nearlv 

 concealed and quite small, although bearing a well-developed pair of 

 legs l)elow. 



''The epimcra of the second and third segments are oblique, but not 

 acute nor produced backward in a lateral view; in the four following 

 segments they are produced and very acute; the seventh epimeron is 



