NO. 3 GARTH : SOME NEW SPECIES OF BRACHYURAN CRABS 69 



four eroded spines as on the carapace, a small median lobe and a larger 

 subdistal one with granulated top; carpus with two or three inner 

 marginal lobes, the outer surface with lumpy granulate-tipped bumps; 

 manus subequal in length to that of carapace, triangular in cross sec- 

 tion, with three large lobes on upper, inner margin, the median the 

 largest and projecting over the inner side of palm, distal upper end of 

 hand raised and lumpy with granules, outer surface of palm with four 

 longitudinal rows of granulous lobes, the upper two rows the largest, 

 the first or top row with three lobes on the proximal half, the second 

 row with four or five, the largest near the gape, the remaining rows are 

 much smaller and extend onto the pollex. The pollex on the major hand 

 is deflexed, short, stout, and with a subbifid tip, unarmed, the inner edge 

 forming a right angle in the gape; the dactyl is granulous, slightly curved 

 and armed with three inner lobes, the proximal the largest ; fingers widely 

 gaping; the pollex of the minor hand is subhorizontal, tuberculate on the 

 outer surface, subtriangular from base to apex, the cutting edge sharp 

 and armed with denticles; the dactyl is nearly straight on prehensile 

 margin, an upper proximal granulous lobe, the outer surface tuberculous 

 and eroded, the fingers not gaping. 



Basal antennal article not quite reaching the ocular hiatus. Outer 

 maxillipeds eroded and tuberculate, with longitudinal sulci, the distal 

 anterior margin of the merus produced. Sternal pit semioval in male, 

 the abdomen not intruding; in female it is more circular, is a continua- 

 tion of the sternal trench, and is entered by the bent tip of the abdomen. 

 The sternum, like the ischium of all of the legs, is eroded and granulate. 

 The abdomen in both sexes is seven jointed, deeply eroded with a regular 

 pattern ; in the male the third segment is widest, the sixth the longest. 



Ambulatory legs with meri compressed, nearly three fourths as wide 

 as long, the teeth on the upper crest partly overlapping one another, 

 leaving interstices between, the lower surface excavate between the side 

 margins, which like the upper crest is pierced with small holes, the mar- 

 gins sutured ; the carpus has a high narrow crest ; the propodus two pro- 

 jections on its posterior margin; the dactyli are slightly curved and 

 granulous up to the corneous tip. 



J'ariation: Considerable variation is found between the adults and 

 the juveniles, the latter being much flatter, the depressions shallower, 

 the surface more eroded and reticulated, the entire upper surface in the 

 merus of the chelipeds deeply eroded, the tip of the male abdomen touch- 

 ing the proximal margin of the sternal pit, instead of being removed from 



