398 



BULLETIN 129, UNITED STATES NATIONAL. MUSEUM 



The spines of the dorsum are arranged about as they are in JiempTiiUi; 

 the notable differences are: The posterior marginal spines of the 

 intestinal region are more prominent and are not continuous with the 

 spines at the extremity of the curved row above. The rostral horns 

 are longer than in the allied species, and the tips curve inward, and 

 are acutely pointed. The orbital teeth or spines are blunt-pointed, 

 the one at the outer base of the preorbital spines is minute or obsoles- 

 cent. Of the 4 antero-lateral spines, which also are blunt, only the 

 first has a secondary spine on its anterior base; at the middle of each 

 of the succeeding sinuses there is a small and insignificant spine or 

 tubercle. The first or hepatic spine is on a lower level than the 

 others. The fourth spine, at the lateral angle of the carapace, is 

 further forward than in JiempMUi; between it and the large postero- 

 lateral spine there is a smaller, slenderer spine. On the subbranchial 

 and subhepatic regions there is a row of 7 or 8 spines extending for- 

 ward from the lateral angle of the carapace to the angle of the buccal 

 cavity. On the basal antennal segment, the spine at the antero- 

 external angle is the largest and is nearer the margin than is the cor- 

 responding one in liemphilli; besides, there is a smaller spine on the 

 orbital margin and one at the base of the next segment; this last 

 spine is at the end of a tuberculated ridge which borders the antennu- 

 lar fossa. 



Chelipeds of male stout, longer than first ambulatory leg; merus 

 with two rows of long spines above and numerous tubercles else- 

 where; carpus armed with high, granulated knobs, much as in 

 Jiemphilli; hands smooth except for a large tubercle on outer surface 

 near proximal end and in the middle of its height; sometimes there 

 is also a granule adjacent in the same horizontal line. Legs stout; 

 merus armed above with 7 or 8 spines in two rows and at the distal 

 end a single spine between those rows, below one or two small 

 spines; 4 or 5 spines on carpus; propodus unarmed. 



Color. — Crimson predominating, mixed with white; outer surface 

 of chelipeds crimson with small white dots; abdomen about equally 

 crimson and white, mottled. 



Measurements. — 



Rostrum incomplete. 



