224 Bulletin Vanderbilt Marine Mtiseum, Vol. VII 



these "drops of blood" designate the crab as being marked by the 

 blood of a chieftain or great warrior, who was slain at sea. 



The carapace is quite broad, 0.5 as long as wide, exclusive of 

 the great lateral spines, very slightly convex, finely granular on 

 the anterior half, this being accentuated by three transverse lines 

 of elevated granules, two of which are located on the gastric, and 

 one on each of the branchial regions. The frontal margin is cut 

 into four sharp, triangular teeth, in addition to the inner orbital 

 angle, the median pair of these teeth being the less prominent; 

 the spine-like process of the epistome projects much beyond these 

 teeth. The supra-orbital margin is cut by two sinuses, the median 

 lobe thus formed has rounded angles. The anterolateral margin 

 is long and oblique, cut into eight triangular teeth in addition to 

 the tooth-like external orbital angle, the lateral spine being from 

 four to five times as long as the others. The posterior margin is 

 smooth and curves confluent with the somewhat excavate post- 

 lateral margins. The male belt is narrowed, triangular, consist- 

 ing of five somites. The female belt is wide, subcircular, with the 

 proximal three articles short, hinge-like, the fourth, fifth and 

 sixth articles expanded, the seventh article small, triangular. 



The external maxillipeds have the merus of the endognath 

 with the outer distal angle not produced. 



The chelipeds are subequal, those of the females and young 

 males being about twice the length of the carapace, while those 

 of large old males are two and a half times as long ; slender, the 

 merus with three to four spines on the upper lateral (anterior) 

 margin, but none on the posterior margin; the carpus is decid- 

 edly spiniform at both the inner and outer lateral angles and has 

 three incomplete carinae on the upper surface; the propodus is 

 massive, as long, or slightly longer, than the fingers, with five 

 carinae on the upper and outer surfaces and two on the inner 

 surface ; the uppermost carina of the outer surface terminates in 

 a distal spine; the second carina is subparallel to the first and 

 also in line with the upper marginal carina of the hinged finger ; 

 the third carina is about median, terminating distally in a spinose 

 nodule at the base of finger ; the third spine is proximal, in ad- 

 vance of the carpal joint, at the beginning of the third carina; 

 the fourth carina is about midway between the third and the 

 lower margin and continues the length of the lower finger; the 

 fifth carina extends along the lower margin and also continues 



