TSOPODS OF NORTH AMERICA. 191 



/'. Abdomen about as wide as long. Outer branch of uropoda twice as 

 wide as inner branch. Propodus of prehensile legs armed with four 

 spines. Abdomen narrow when compared with thorax, tapering, last 

 segment narrowly rounded. Second antennae extend to the middle 



of the second thoracic segment Rodnela angustata Richardson 



V . Flagellum of second pair of antennae 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. 



Rodnela tuberculosa Richardson 

 c' . No tubercles on body. Propodus of prehensile legs unarmed or armed with 



only one spine. 



d. Terminal segment of abdomen ornamented with a pair of narrow semilunar 

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



unarmed Rodnela signata Schicedte 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. 



Rodnela aries Schicedte and Meinert 



ROCINELA OCULATA Harger. 



Rodnela oculata HARGER, Bull. Mus. Comp. Zool., Harvard College, XI, No. 4, 

 1883, pp. 97-99, pi. in, fig. 2-2a; pi. iv, fig. 1. RICHARDSON, American 

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



Locality. Latitude 32 18' 20" north, longitude 78 43' west. 



Depth. 252 fathoms. 



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

 sparsely punctate. 



"Head subreniform, produced in front into a truncated process over 

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

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

 ocelli are large and quincuncially arranged in ten rows along the long 

 axis of each ej r e. Five of these rows meet along the median line. 



"The antennula? are slender and scarcely 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; flagellum about as long as the peduncle, 

 slender and composed of five segments, of which the first is much the 

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

 terior border of the eye when the antennula is reflexed. The antennae 

 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 nearly 

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

 legs below. 



"The epimera 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 



