I. '21. 45 



joint is best seen from below and bears a sharp tooth at its 

 anterior end. The fourth joint is short, stout, and cylindrical. 

 The fifth is as long as all the others together ; it is compressed 

 and slightly thickened distally. The flagellum is almost devoid 

 of hairs and is about three times as long as the carapace. There 

 are few setae on the peduncle except on the acicle. 



The chelipeds are very unequal, the right being enormously 

 larger than the left. In the female it is not developed to such 

 an extent as in the male, but it is always markedly the larger 

 of the two. In the male the right cheliped may be four times 

 as long as the carapace. Its merus is short, slightly com- 

 pressed in its upper part so as almost to form a ridge. The 

 lower surface is flattened. There are a few sharp teeth on the 

 outer edge of the lower surface towards the front. The outer 

 surface is minutely granular, the granides becoming larger 

 and rougher on the upper edge ; the inner surface is almost 

 smooth. At the anterior end of the upper edge there is a 

 single small tooth directed forwards. The carpus is about as 

 long as the palm of the propodite. On all sides it is minutely 

 granular. The upper inner edge is marked by a row of strong 

 teeth. The propodite is long and fairly broad, the palm longer 

 than the fingers. It is covered with minute granules above 

 and below. The outer ed^e is almost straio^ht but mav be 

 slightly concave opposite the base of the dactyl. The fingers 

 are acuminate without terminal claw^s. The upper surface of 

 the palm is slightly arched from side to side. The outer edge 

 is not sharp but rounded and in its proximal half is defined 

 by a series of very minute points w^hich fade away distally. 

 The inner edge of the palm is slightly roughened but has no 

 definite teeth. On the upper surface at the posterior end and 

 nearer the inner than the outer edge there is a low rounded 

 prominence or tubercle. The cutting edges of the fingers are 

 formed of rounded calcareous teeth. 



The left cheliped is very small and slender compared with 

 the right ; it reaches to the base of the propodite of the latter. 

 The merus is more strongly compressed than in the right. The 

 carpus has a roAv of teeth on the inner upper edge and has also 

 a second row of less distinct teeth on the upper outer edge. 

 The hand is very narrow and the rounded tubercle is relatively 

 larger than in the right. The fingers are about equal in length 

 to the palm and end in yellow claws. Their cutting edges are 

 lined wdth large numbers of fine transparent yellow spines 

 which slope towards the tip. 



The walking legs (second and third pereiopods) are long and 

 laterally compressed. In the right walking leg of the first 

 pair, the merus is long, its upper edge is rough and bears small 

 bunches of setae and bristles ; there are also a few of these 

 present on the lower edge. The carpus is of the usual form 

 and bears a row of from eight to eleven strong teeth on its 

 upper surface. On the upper edge of the propodite there is 

 a row of very minute points from which spring a few setae. 



