CRUSTACEA OF THE MERGUI AECHIPELAGO. 223 



outersurface, and are fringed along tbeir inner margins with long 

 hairs, those of the last three joints being very long. The abdomen 

 is very long, even much longer than the carapace. 



The anterior legs are somewhat unequal, the right being the 

 larger. Except the basipodites, ischiopodites, and the base of the 

 meropodites, the chelipedes are thickly clothed with hairs on their 

 outer (upper) surface, and quite smooth and glabrous on their 

 inner (under) surface, agreeing in this character with P. transversa. 

 The anterior legs resemble somewhat those of P. picta, Stimps. 

 The upper surface of the meropodite is convex and smooth, 

 though marked with some delicate transverse lines on the distal 

 half, which, however, are only visible by means of a magnifying- 

 glass ; this joint, the upper surface of which is densely hairy, except 

 at its base, is armed with a prominent, rounded, minutely denti- 

 culate lobe at the distal end of its anterior margin. The wrist 

 is scarcely t^ice as long as the merus-joint, and its upper 

 surface is once and a half as long as broad ; the inner or anterior 

 margin is entire, scarcely arcuate, and projects in the form of 

 a crest, almost as in P. transversa. The upper surface of the 

 wrist is smooth, though minutely punctate, and is everywhere 

 thickly clothed with hairs ; the posterior margin is also entire. 

 When the fingers are included, the hand is scarcely twice as 

 long as the wrist. The fingers are comparatively short, being 

 scarcely half as long as the palm, and the hand, including the 

 fingers, is rather slender, being three times as long as high. 

 The outer surface of the palm is smooth, although minutely 

 punctate and densely hairy; the under or inner surface is 

 convex, smooth, and glabrous. As in P. transversa, the lower 

 border of the palm is marked with a minutely granulated line 

 running to the end of the immobile finger; this granulated 

 line, however, is scarcely visible to the naked, eye. The fingers 

 are densely hairy externally, and smooth and glabrous internally, 

 except near their internal edges ; they have arcuate pointed 

 tips, which slightly cross one another. The lower border of 

 the immobile finger forms a continuous straight line with the 

 lower border of the palm, this finger not being deflexed. 

 The external margin of the cutting-surface of the immobile 

 finger is faintly crenulate and presents a small prominence 

 a little beyond the middle ; a conical tooth, however, is not found 

 at the base of the cutting-surface, which is flattened or even 

 slightly concave. The mobile finger is somewhat rugose or 



