178 Bulletin, Vanderdilt Marine Museum, Vol. II 



ocellate spots, wine red edged with chrome yellow, on the postlateral 

 part of the back, one each above the fourth leg. 



Technical description : Carapace oval, 26 mm. long, 50 mm. wide 

 from tip to tip of lateral spines ; frontal teeth four, of equal length, 

 but the inner pair are wider and blunter than the outer pair, which 

 are acuminate, as are also the preorbital teeth, which are about of the 

 same length as the frontal teeth, from which they are separated by a 

 moderate U-shaped sinus. The eight teeth of the lateral margin are 

 acute-tipped, with points directed forward; the anterior margin of 

 each tooth concave, the posterior margin convex; the lateral spine is 

 very long, acute, forward and upward directed, with a median carina 

 on the upper surface, curving in across the branchial region to the 

 cardiogastric. There is a lightly etched mask-like figure on the median 

 region of the carapace : two transverse, granulate lines, one behind 

 the other, on the gastric region ; pits on either side of the cardiogastric 

 region, each side of the cardiac region with a granular eminence. The 

 postlateral and posterior margins have a flattened carina. The upper 

 surface of the carapace and chelipeds is finely setose. The male ab- 

 dominal belt has a prominent transverse carina on the second segment 

 and another on the third segment. 



The antennulae are slender and fold transversely. 



The antennae have the basal article produced into an oval lobe at 

 the lower distal angle, which fits into the orbital sinus above the infra- 

 orbital tooth; the remaining peduncular articles are short, cylindri- 

 cal, the flagellum is slightly longer than the orbital cavity. 



The external maxillipeds have the ischium rectangular, almost 

 square, with a median longitudinal groove, the inner margin fringed 

 with setae ; the merus is about four-fifths as long as the ischium, nar- 

 row, with the outer margin rounded, the inner distal angle obliquely 

 truncated. 



The eyes are large, renif orm. 



The chelipeds are long, the merus with five teeth on the anterior 

 margin, one, subdistal, on the posterior margin, a heavy fringe of 

 setae on the anterior margin; the carpus has a long, sharp tooth at 

 the inner angle, a shorter tooth at the outer angle, three ridges on the 

 upper surface; there is also a strong spine proximally on the outer 

 face of the propodus adjacent to the median tip of the carpus; the 

 propodus is moderately robust, with four light carinae, two marginal 

 and two intermediate, the uppermost one forming the upper margin 

 and terminating in a weak distal and stronger subdistal, nearly me- 



