6/ 



in the median line, lateral margins raised, convex, but not diverging distally. External 

 maxillipeds m a r k e d 1 y o p ere u late, s c a r c e 1 y g a p i n g ; ischium with the lateral margins 

 somewhat concave and the anterior inner angle produced, surface smooth, except for 

 a row of very small granules immediately behind the suture between ischium and merus; this 

 suture is slightly oblique and somewhat concave forvvard, but may still be called transverse; 

 merus longer and broader than ischium, inner margin short and straight, anterior 

 margin deeply notched in the middle for the insertion of the carpus, the outer part 

 of this margin reaching farther forward than the inner portion and passing with a much convex 

 outline into the long external margin of the merus, the surface is naked, but provided with a 

 few scattered granules in the middle. Sternum broad ; its anterior margin between the bases of 

 the chelipeds rising into a sharp ridge, forming the postenor boundary of the buccal cavern. 



Abdomen of cf (fig. 3 c) by far not rilling up the space between the bases of the 

 posterior legs: second segment longer than, but as broad as, the preceding, third, fourth 

 and fifth segment fused, so as to leave scarcely any tracé of sutures, but the sinuses in 

 the margins still provide indications of separation ; third segment narrower than the second, and 

 fourth again narrower than the preceding; between the fourth and fifth segment 

 the abdomen is markedly constricted and then widens again towards the sixth or 

 penultimate segment, the lateral margins of which are convex and slightly converging forvvard, 

 so that the base of the segment is somewhat longer than the anterior margin : the terminal 

 segment finally is semi-circular, the width at the base slightly exceeding the length, which 

 latter is somewhat larger than that of the preceding segment. All the still existing sutures 

 between the segments are peculiarly wavy, and the abdomen reaches upward till nearly the 

 elevated ridge, that anteriorly defines the sternum. 



The chelipeds (fig. 3^) are equal ; their length equals the maximum breadth of the 

 carapace; meropodite short, slightly projecting beyond the carapace, unarmed, but granular; 

 outer surface with transverse rugosities, upper and especially outer border fringed with rather 

 long hairs; carpopodite small, with the upper surface granular and the inner angle rounded, 

 between this inner angle and the palmar joint with a row of hairs ; chela elongate, palm about 

 i 1 /. times the length of the fingers and longer than high, with the upper margin rounded, and 

 the whole surface naked and minutely granular-, fingers gaping, not compressed, spooned l ) and 

 somewhat hairy at the tip, cutting margins finely crenulate, but the movable finger 

 presents near the base a large, oblique tooth, increasing in height distally and 

 itself finely crenulate at the free margin. 



The ambulatory legs are rather slender ; the second pair is the longest and about 1 '/ 2 

 times the greatest breadth of the carapace, the third pair is only very slightly shorter, and 

 the first and fourth pairs are again shorter and subequal in length. All the legs are hairy at 

 the surface, especially towards the margins, and the latter themselves are heavily fringed 

 with long hairs; the meropodites are 3 1 /, times as long as broad and there is a rectangular 

 prominence near the distal end of the anterior margin, which projection is even acuminate in 



1) This character is, according to Stimpson, still more pronounced in the £>, i n which the chelae resemble those of the same 

 sex in Uca. 



67 



