170 " THETIS " SCIENTIFIC RESULTS. 



length to the summit. Each joint bears on its upper margin 

 three or more long curved set^e. The setae are branched on one 

 side, giving rise to two short hairs equal in length ; they are 

 opposite below; but become alternate towards the summit. 



Antennal acicle slender, 0'65 mm. in length, with seven or eight 

 spinules on the inner aspect of the upper surface, and an unequal 

 pair at the apex. 



Chelipedes in adult male unequal, the right being much the 

 smaller. The left chelipede is 10 mm. in length. The merus 



joint is trigonus. 

 The inferior border 

 is armed with about 

 ten spines ; the distal 

 six are rather elon- 

 gate, strong and 

 curved. Superior bor- 

 der with a line of 

 seven spinules, three 

 of which are situated 

 Left Chelipede x 8. anterior to the slight 



Fig. 11a. transverse groove. 



The external border bears a series of subspiniform granules 

 and terminates distally in an obtuse denticle. SujDerior distal 

 margin with three or four small spinules. Lower surface setose, 

 external granulose, inner smooth, polished and marked with two 

 transverse red blotches near the distal end and a cuneate impres- 

 sion proximally. 



Carpus rounded, except the superior border, which is slightly 

 angular and bears seven spinules. The superior and external 

 surfaces are granulose ; a few of the granules are subspiniform 

 and shortly seriate. The lower, inner and inferior surfaces are 

 smooth. Hand 4 mm. long, its greater diameter 2 mm. and the 

 lesser 1"8 mm. Inner surface of palm with a few scale-like 

 granules from which arise some short, stiff seta?. 



External surface and both borders of the palm more or less 

 covered with rounded granules disposed as follow : — A close 

 double row on the upper border and another rather indistinct on 

 the lower; the latter widens out proximally and extends upwards 

 to the middle of the hinder margin of the palm; here commences 

 a ridge which is continued to the tip of the slightly bent lower 

 finger ; the ridge bears a series of tubercles, each of which is sur- 

 mounted by two or more granules ; another similar row of 

 tubercles is present in a line with the inter-digital space. 



Fingers acute, crossed and calcareous at tlie tips, meeting along 

 their edges when closed ; external surfaces sulcate, outer aspect 



