DESCRIPTION OF A NEW HERMIT CRAB — WHITELEGGE. 49 



of the eyestalks and the outer antennae. Externally the front 

 slopes away to subacute angles, and the sides have an angular 

 ridge which extends about half way towards the cervical groove. 



Posterior region of carapace membraneous, with six longitu- 

 dinal depressed lines ; the central pair is rather wide apart, and 

 gradually converges, becoming deeper and wider posteriorly; the 

 other two pairs are closer together, and are situated midway 

 between the median line and the margin, posteriorly they diverge 

 and terminate at the densely hairy hinder border. At the sides 

 anteriorly there are several faint transverse linear depressions. 



Ocular peduncles stoutish at the base and slightly thicker at 

 their apices than in the middle. In length they are equal to the 

 anterior region of the carapace. Eyes black, with a slight 

 descending lobe on the external aspect. Ocular scales thrice as 

 long as broad at the base, terminating in a small distinct spine, 

 and with one or two minute ones on the external apical border. 



Peduncles of the internal antennte a little shorter than the 

 eyestalks ; the latter are about one-third longer than the peduncles 

 of the outer antennae. 



The external antenna? bear a few stiff seta? near the base ; the 

 first joint almost reaches to the external angle of the front; the 

 second joint is short, stout, and bears two spines on the superior 

 distal angles, the outer of which is large and bispinose at the tip ; 

 the penultimate joint is about equal to the second ; there is a 

 small spinule on its superior distal end. The ultimate joint is 

 nearly equal to the three preceding combined. The antennal 

 acicle reaches to, or slightly exceeds the extremity of the third 

 joint ; it is armed on its inner border with four or five spines, and 

 is bi- or trispinose at the apex. 



Flagellum twice as long as the peduncle. 



The ischium joint of the left chelipede of the male is laterally 

 compressed, and bears a bead-like lobe on its lower edge, near the 

 distal end, in half grown examples this lobe is scarcely indicated. 

 Merus joint trigonous as broad as long ; the external and internal 

 surfaces are convex, smooth, glossy, and very distinctly punctate; 

 the lower distal margin is deeply excavated, and adapted to the 

 shape of the carpus, upper border acute, smooth to within a short 

 distance of the distal end, which bears a few spiniform granules. 

 A well defined transverse, subdistal groove extends from a point 

 posterior to the articulation with the carpus on the external 

 surface, and is continued on the inner surface to the junction 

 with the ischium. Lower border short acute, with one or two 

 spinules about the middle. 



Carpal joint broader distally than the length of the upper 

 border ; lower distal margin transversely produced into a thin 

 plate, so that the base of the hand, when the chelipede is bent 

 down, is almost in contact with the merus. 



