208 Bulletin, Vanderhilt Marine Museum, Vol. II 



allel carinae running obliquely in from along the posterior half of the 

 lateral margin toward the postlateral angle; the regions of the cara- 

 pace are sharply delineated; the frontal region and gastric lobes are 

 granulose, the sides finely punctate, the remaining upper surface 

 smooth, shining. The pterygostomian region is very finely and regu- 

 larly beaded. The male abdomen is seven-segmented, subcircular, 

 except for the last segment, which is abruptly narrowed with its dis- 

 tal margin rounded. 



The antennulae fold transversely beneath the frontal margin. 



The antennae are small and are excluded from the orbit by a 

 broad rounded lobe. 



The eyestalk is short ; the cornea is large, terminal, highly developed. 



The external maxillipeds are well separated, the distance between 

 them being quite equal to the width of one maxilliped. The ischium 

 is unequally suboval, the inner side being more convex than the outer ; 

 there is a distinct median channel on the outer face of the ischium ; the 

 merus is oblong oval, scarcely one-sixth longer than the ischium ; with 

 a distinct groove subparallel to the outer margin and a deeper groove 

 obliquely channelling the median region ; the palp is narrow, elongate, 

 setiferous ; the inner lateral margins of the maxilliped are also fringed 

 with long, stiff setae. 



The chelipeds are small, a sharp subdistal tooth on the upper ischial 

 margin; the merus three-sided, granulose on the lower surface and 

 margins ; the carpus is convex, granulose. The propodus of the male 

 is greatly dilated, convex, granulose and furnished with clusters of 

 stiff bristles ; the fingers are nearly as long as the palm, in the male 

 gaping widely, the tips meeting, the inner edges weakly dentate ; there 

 are bristles on the proximal half of both fingers. 



Ambulatories long, slender, successively decreasing in length pos- 

 teriorly; meral joint oblong, suboval, one-third as wide as long, the 

 anterior lateral margin with an acute distal and subdistal tooth; the 

 upper surface roughly granulose; the carpus is elongated, narrowed 

 basally, dilated distally with two longitudinally carinae ; the propodus 

 is about twice the length of the carpus and narrows distally ; the dac- 

 tyli are short, stout, less than one-third the length of the propodi, 

 very acuminate; both lateral margins of the propodi and dactyli are 

 set with stiff curved spines which assist the crab in its climbing. 



Color: My field-notes made on specimens observed in southern 

 Florida and in Cuba state that this crab is deep mottled bottle green 

 on the body, the eyes velvety brown ; the ambulatory legs green with 



