72 Bulletin, Vanderhilt Marine Museum, Vol. Ill 



The antennae have the peduncular joints stocky, cylindrical, the 

 flagellum exceedingly ciliate, slender, extending as far as the finger 

 of the extended great chelae. 



The external maxillipeds have the ischium large, lobate, its inner 

 lateral and distal margins convex; the merus about as long as the 

 ischium but much narrower, with the inner lateral margin concave on 

 either side of an almost median, rounded, triangulate node ; the basal 

 peduncular article is triangular on the outer face, grooved beneath, 

 the second article is tapering and very setif erous, the third is smaller, 

 more tapering and also furnished with a brush of very long, plumose 

 setae. 



The chelipeds are decidedly unequal, the right being the larger. 

 The meral joint is small, appressed, with the inner lateral margins 

 denticulate distally; the carpus is nearly as long as broad, with the 

 outer surface convex and paved with coarse transversely placed, 

 squamose rugae; the superior lateral margin is armed with four ap- 

 proximately equal, triangular teeth, the distal one of which is occa- 

 sionally augmented by an enlarged granule basally, causing the tooth 

 to appear bifid; the propodus is much enlarged, the palm a little 

 more than the carpus, dilated distally, the finger short and thick, with 

 a large, blunt, sub-basal tooth, followed by two or three smaller teeth, 

 the tip triangular; both palm and lower finger are paved with coarse, 

 rough, rounded granulae, which along the inferior margin form a 

 double row. The hinged finger is curved, slenderer than the lower 

 finger, with a large sub-basal and several smaller teeth; the outer 

 surface squamose. 



The second, third and fourth legs are similar, successively decreas- 

 ing slightly in size posteriorly, all with the meral joint widened, its 

 greatest width equal to quite half its length ; suboval, the carpus little 

 more than half as long as the merus, subcylindrical, but widening 

 slightly distally, with the outer distal angle forming a blunt tooth, 

 the inner distal angle less pronounced ; the propodus is as long as the 

 carpus, subcylindrical, armed on the inferior lateral margin with a 

 row of three or four acute, forward-pointing spines; the dactyl is 

 three-fourths as long as the propodus, smaller, with a very acuminate, 

 curved, hook-like tooth at the apex and a row of three acute spines on 

 the inferior lateral margin. The lateral margin of the merus, carpus 

 and propodus is roughened, granulose and set sparsely with clusters 

 of setae. 



