CRUSTACEA OF THE MERGUI ARCHIPELAGO, 231 
are not dentate, but only present some parallel, transverse 
grooves. 
The right chelipede is much smaller and still more hairy. The 
acute upper margin of the meropodite is clothed with long hairs, 
and armed at its distal end with three acute spinules. The 
internal surface appears everywhere smooth and flattened, but 
the flattened outer surface is covered with some piliferous 
elevated lines. The under surfaces of the meropodite and ischio- 
podite are hairy. The internal margin of the upper surface of 
the wrist is clothed with rather long hairs; the upper surface 
itself is covered with piliferous acute tubercles or spinules. The 
hand is very hairy, and its outer surface is also armed with many 
piliferous acute tubercles and spinules. 
As the legs of the second and third pair almost closely re- 
semble one another, J will only describe the right leg of the 
third pair. All the joints are clothed along their upper margins 
with long hairs, which are also found along the under mar- 
gins of the ischiopodite and meropodite. The outer surface of 
the meropodite is covered with many transverse, piliferous, 
elevated lines, and its upper margin is armed with a row of 
sharp spinules. The inner surface of this joint, and that of 
the carpopodite, appear perfectly smooth. The upper margin 
of the carpopodite is armed with a row of small spinules, which 
gradually increase a little in size towards the distal end, and the 
outer surface is covered with some piliferous elevated lines, 
arranged longitudinally. 
The outer surface of the propodite, which is about four times 
as long as broad, and somewhat arcuate, is covered with three 
or four rows of piliferous tubercles, of which those of the upper 
row are rather acute; the upper margin of this joint presents a 
row of acute piliferous spinules, and some small, depressed, 
piliferous granules are also found on its inner surface. 
The somewhat arcuate dactylopodite, which is about once 
and a half as long as the propodite, gradually tapers to its 
pointed tip. The upper margin of this joint presents some very 
small spinules along its proximal third; its outer surface is 
longitudinally sulcate, but its inner vee presents a longi- 
tudinal ridge, clothed with hairs, some hairs being also found 
along its acute upper and under margins. 
I may add that the male and female completely agree with one 
another. 
