452 PROCEEDESTGS OF THE NATIONAL MUSEUM vol. 115 



Antennal peduncle slightly longer than antennular, with ventral 

 marginal tooth under base of scale. Flagellum flattened, somewhat 

 longer than carapace. Scale (fig. 55) narrow: blade shorter than 

 spine but slightly wider, separated by slit for ji length. Reaches to 

 nearly middle of third antennular peduncle segment. 



Thkd maxilliped reaches to about middle of second segment of 

 antennular peduncle. Ischiomeropodite broad, flattened, curved 

 over mouth parts; slightly longer than other segments together. 

 Penultimate segment shortest, armed with tufts of stiff bristles, distal 

 segment with bands of stiff bristles on inner margin. 



First legs subequal, large. Ischium short, stout. Merus stout, 

 about twice as long as wide, triangular in cross section. Dorsal 

 ridge smooth but ventral ridges with poorly developed setae and teeth. 

 Carpus short, cup-shaped, naked. Chela elongate, more than twice 

 length of merus, 2^ times as long as wide, wdth palm slightly longer 

 than fingers. Blunt tooth on proximal part of fixed finger, followed 

 by hiatus before denticulate cutting siu-face, which meshes with 

 similar area on dactylus, which also has similar proximal tooth. Cut- 

 ting surfaces sparsely setose. Chela somewhat flattened lateraUy, 

 dorsal and ventral margins rounded, not knifelike. 



Second leg (fig. 64) long, slender. Ischium slightly longer than 

 merus, which is shorter than carpus. Carpus with fu'st segment 

 longest, about 1}^ of fifth, which is longer than subequal second, third, 

 and fom'th segments. Fingers and palm subequal with curved 

 bristles distally and spinulose cutting surface. 



Third leg (fig. 75) with stout ischium and slightly dflated merus. 

 Merus slightly longer than propodus, which is 1% times length of 

 carpus. Movable spine on proximal part of merus. Dactylus 

 (fig. 76) short, }i length of propodus, with bifid tip somewhat hidden 

 by setae. Spines on ventral margin of carpus and propodus short 

 but stout; one pair on carpus, many on propodus with distal pair 

 longest. 



Fourth leg similar but slightly smaller. 



Fifth leg with shorter ischimn. Spines on ventral margin of 

 propodus very small, bristles of brush short. No movable spine on 

 merus. 



First pleopod with endopodite curved and ji length of exopodite. 

 Second pleopod with slender subequal exopodite and endopodite. 

 AppendLx interna stout, straplike. 



Uropod (fig. 62) with posterior margin of peduncle produced into 

 two small teeth close together, without setae. Posterolateral tooth 

 well developed on proximal part of exopodite; spine beneath this 

 somewhat short, stout. Uropods longer than telson. 



Male. — ^Very similar to female, but chelipeds (fig. 63) slightly longer 



