ia 
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CRUSTACEA OF THE MERGUI ARCHIPELAGO. 251 
third legs are shorter than the propodites. It therefore some- 
what resembles C. equabilis; but may be recognized at first sight 
by its remarkable and beautiful coloration. The gastric region 
of the upper surface, which is about as long as broad, has a 
yellowish-red ground-colour, marked with some yellowish-white 
spots, viz. one spot in the middle anteriorly and six on each side, 
arranged in two longitudinal rows behind one another. The 
median frontal tooth is acute, triangular, and projects more 
forwards than the lateral frontal teeth situated just outside 
the bases of the eye-peduncles ; the median tooth is yellowish 
white. The slender eye-peduncles are a little longer than the 
anterior breadth of the cephalothorax, and scarcely more than 
twice as long as the distance between the lateral frontal teeth. 
The basal scales are very small and slightly denticulate. The 
eye-peduncles are somewhat longer than the peduncles of the 
external antenne, and surpass the peduncles of the internal 
antenne by half the length of the cornea. The peduncles of the 
external antenne are yellowish red, and marked with yellowish- 
white spots. The three anterior pairs of legs are of a beautiful 
red colour, and covered everywhere with rather large, round, 
often confluent, yellowish-white spots; the fingers of the cheli- 
pedes are more white than red, the former colour being prepon- 
derant. The merus-joints of the anterior legs are armed with one 
or two acute spinules at the distal ends of the under margins of 
their outer surfaces ; eack carpopodite presents an acute spine 
at the distal end of the inner margin of the upper surface, which 
is otherwise unarmed and smooth. The hands are equal, and 
their upper surfaces are a little more than twice as long as bread 
(the fingers being included); the mner margin of the upper 
surface of the palm is armed with three or four acute spines or 
teeth, and the upper surfaces of the palm and fingers present 
a small number of similar acute spines or teeth. The fingers 
are somewhat denticulate along their inner margins, and have 
black spoon-like excavated tips. 
The meropodites of the second pair of legs are armed with a 
small acute spinule at the distal ends of the under margins of 
their outer surface; the carpopodites of the second and third 
pairs present a strong spine at the distal ends of their upper 
margin. The dactylopodites of the second and third pairs of legs 
are shorter than the propodites; they are slender, terminate 
in rather long black tips, and are armed along their under 
