CRUSTACEA WHITELEGGE. 145 



The external maxillipes have the ischium and raerus joints 

 obliquely striate, the latter with a prominent internal lobe near 

 its proximal end, the former is subquadrate and slightly convex 

 on its inner edge. 



The chelipedes in the male are unequal, the left slightly the 

 larger. The merus has a transverse ridge rather nearer to the 

 distal end than the proximal, on the distal edge there are three 

 or four flattened granules. The antero-internal extremity with a 

 compressed denticulate lobe. 



The carpus is armed on its inner border with four compressed 

 compound spines, the proximal large, the other three forming a 

 diminishing series. Each tooth or spine branching and bearing 

 several accessory spinules. 



The superior and external surfaces are ornamented with 

 peculiar hooked spines, which are broad, flattened, and minutely 

 denticulate at their apices, very few are single pointed, they are 

 apically curved, and their tips are directed towards the distal 

 end. The under surface is smooth, the infero-internal angle has 

 a few small compressed granules near its base. The hooked 

 spines are at least their own diameter apart and irregularly 

 disposed. 



The lower border of the hand is straight, the upper forms 

 almost a right angle with the mobile finger. The spines on the 

 lower and external surfaces of the palm are similar to but smaller 

 than those on the carpus, the upper surface has a few flat 

 granules and the crest is smooth. 



The mobile finger has two rows of sub-imbricated spines, which 

 when viewed in profile with a lens gives it a serrate appearance. 



The two lower rows of spines of the palm are continued to the 

 extremity of the immobile finger. The internal surface of the 

 palm is convex and obliquely striate, especially on the lower 

 portion, strise are also present on inner surface of the immobile 

 finger, the mobile finger has a pair of denticles near its base, and 

 a small hooked spine at its extremity, which is opposed to a 

 similar spine at the tip of the immobile finger. 



The merus joints of the ambulatory legs are transversely striate 

 on their posterior surfaces, the upper edge of the merus has from 

 four to six minute spinules, the distal one large. 



The carpus is armed above with eight spines in two rows, of a 

 similar kind to those on the carpus of the chelipedes, i.e., flat- 

 tened, curved, and minutely denticulate at the summit, the distal 

 being long and considerably overlapping the base of the propodus. 

 The length of inferior margin of the carpus scarcely exceeds the 

 transverse diameter of the merus. 



The posterior surface of the propodus is crossed by four or five 

 oblique strise, the upper edge is armed like the preceding joint 



