( 135 ) 



The 2nd joint of the antennal peduncle has its outer angle produced 

 into a long setose spine : the acicle, which is strongly curved, with the 

 convexity inwards, reaches nearly to the end of the peduncle, its convex 

 inner border being strongly setose : the flagellum is at least as long as the 

 body. 



The right cheliped is vastly the larger, and the wrist and hand increase 

 in length, in the male, with age : ordinarily in the male it is about 2| times 

 the length of the carapace, but in the female it is shorter. The merus has 

 the inner border alate, serrate and thickly hirsute : the carpus, which has 

 the inner angle granulous or spinulous, and strongly prominent to buttress 

 the flexed hand, is as long as the merus, but shorter than the palm ; its 

 outer surface is irregularly studded with small acute tubercles which may 

 sometimes form imperfect lines. The hand is strongly curved, with the 

 convexity outwards : the palm greatly increases in height distally, but is 

 usually longer than high, its lower border (and that of the fixed finger) is 

 thin and is finely and bluntly serrulate, its upper border is well defined and 

 granulous ; internally the upper surface of the palm is demarcated from the 

 true inner surface by an enormously-strong oblique ridge or buttress : the 

 fingers are very broad, and are compressed, acute and strongly curved, with 

 the convexity outwards, the dactylus, which is about as long as the palm, 

 having a thin, bluntly-serrulated upper border : the whole outer surface of 

 the hand and fingers is covered with subspiniform granules, and the upper 

 surface of the palm with larger, sometimes subsquamiform, granules. 



Left cheliped slender, setose, not reaching base of right dactylus : the 

 hand and fingers are curved inwards, the fingers being longer than the palm : 

 the lower border of the merus and the upper border of the carpus are 

 spinose. 



The and and 3rd legs in the male just surpass, but in the female surpass 

 considerably, the large cheliped : the dactylus is stout, strongly curved, 

 plumose on the convex upper border, and about as long as the two preceding 

 joints combined. Except for a spinule or two on the anterior border of the 

 carpus, these legs are unarmed. 



In the female the posterior ramus of the first three unpaired abdominal 

 appendages is particularly broad and stout, and the narrow anterior ramus 

 of the fourth unpaired appendage is particularly long and narrow. 



Length of carapace about 20 millim. 



Colours in spirit biscuit yellow : in life, either bright red like the 

 Rostellaria whose abandoned shell it inhabits, or " legs crimson dotted with 

 yellowish white, under surface of joints white," 



