CRUSTACEA OF THE MERGUI ARCHIPELAGO. 219 
The upper surface of the carapace is smooth, though sparsely 
punctate. The front is rather broad, with a straight, truncate, 
anterior margin. The external orbital angle is acute, and there 
is no epibranchial tooth. The auterior half of the lateral 
margins is cristate, but the posterior is rounded and covered with 
some oblique elevated lines. The chelipedes are unequal, the 
left being the larger. The carpopodite is scarcely longer than 
broad, and is armed at its anterior margin with two or three acute 
teeth; the upper surface is somewhat uneven, presenting some 
oblique elevations, especially towards the posterior (external) 
margin. The outer surface of the hands bears three or four 
somewhat uneven longitudinal ridges, by which two or three 
longitudinal grooves are formed. The upper surface of the car- 
popodite and the outer surface of the hand are glabrous, but 
distinctly punctate. The fingers have somewhat curved, acute 
tips. The inner surfaces of the hands are very convex and also 
somewhat punctate. 
The meropodites of the ambulatory legs are unarmed. The 
somewhat hairy carpopodites and propodites are longitudinally 
sulcate on their upper margins, and the acute dactylopodites 
are armed with two or three short spines on their inner 
margins. 
Dimensions. 
= millim. 
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The specimen perfectly agrees with the description of P. pul- 
chella, Hasw. Mr. Haswell erred in separating his specimens 
as a distinct species from P. sculpta, M.-Edw., in which the 
anterior margin of the wrist of the chelipedes is armed with two 
strong teeth, as in P. puchella. 
P. sculpta, Dana, however, is probably another species, as the 
anterior margin of the wrist seems to be unarmed. 
Porcellana sculpta, M.-Edw., has been observed on the coasts 
of Java and of Northern and North-eastern Australia. 
