46 Bulletin Vanderhilt Marine Museum, Vol. V 



The eyes are set on short, cylindrical stalks, proximally concealed 

 by the carapace and partly visible in the concavity on either side of 

 the rostrum; proximally there is a calcareous denticle; distally the 

 stalks are tapered and directed forward and upward, with a narrowed 

 calcareous process extending the length of the inner lateral surface 

 and forming a tip at the apex; the cornea is brown and forms an 

 elongated oval on the under surface but is obliquely a third shorter on 

 the upper surface. 



The antennulae are slender and fold almost vertically, when re- 

 tracted, Ij^ing concealed beneath the setae fringes of the basal articles 

 of the antennae. 



The antennae have the basal article rounded distally; the second 

 article greatly enlarged and bent inward, with a distinct carina termi- 

 nating in a small point, defining the division between the lower and 

 upper section, again bent inward before the orbit, with the outer 

 margin rounded and produced distally to a rounded, subovate proc- 

 ess; the third article is smaller and also bent, having a lower and 

 upper area of the exposed surface; the flagellum is broken off. The 

 lateral margins of the peduncle are quite setose. 



The external maxillipeds are very close-fitting, about twice as long 

 as wide, with the ischium of the exopodite short, triangular ; the related 

 merus a narrowed, tapered, slightly bowed or curved article, extending 

 a very little distance beyond the base of the merus of the endopodite. 

 The ischium of the endopodite is long and narrow, slightly wider dis- 

 tally, wdth the inner lateral margin thickened, straight, and setose, 

 the outer lateral margin sinuate; the distal margin is produced into 

 an elongate, rounded process at the inner angle and a smaller subacute 

 process on the outer angle; the merus is seven-eighths as long as the 

 ischium, substantially wider, with the distal margin obliquely trun- 

 cated and setose, the apices of two halves forming a wide triangle; 

 the inner meral margin is thickened and heavily setigerous. 



The chelipeds are equal, of the shape typical in Raninas, in the 

 male rather large and with the propodus and fingers greatly com- 

 pressed. The ischial joint is stout and terminates in a blunt node at 

 the inner distal angle; the merus is long and stout with the lower 

 surface rounded and with three or more transverse curved carinae, 

 consisting of denticles, on the outer half, extending up towards the 

 carinate upper lateral margin, which terminates in a blunt triangulate 

 tooth ; there is also a series of scattered denticles on the distal half of 

 the outer surface. The carpus is three-fourths as long on its upper 



