CETJSTACEA OF THE MEE&TJI AECHIPELAGO. 249 



Dana, is minutely denticulate along its whole length, is quite 

 entire in these specimens. The wrist is armed with an acute 

 spine at the distal end of the inner margin of the upper surface ; 

 the latter is somewhat uneven, and clothed with some yellow 

 hairs. The hands perfectly resemble those of C. cequalilis, O. 

 coraUinus, and C. zebra, as regards their form and size ; their 

 upper surface is nearly twice as long as broad (the fingers in- 

 cluded), and the palm is considerably swollen below. The inner 

 margin of the upper surface of the palm is armed with a row of 

 four or five acute teeth, and the upper surface is covered with 

 some more or less acute tubercles or teeth. These tubercles are 

 more numerous and more acute on the fingers, which have spoon- 

 like excavated tips, and are armed with two or three rather 

 strong teeth along their inner edges. The convex under surface 

 of the hands is rather smooth. The hands and the fingers are 

 rather hairy above and a little so below. 



The legs of the second and of the third pairs have a smooth, 

 never granular, surface, which, however, presents many small 

 impressions, in which the hairs with which the legs are clothed 

 are implanted. The meropodites of these legs are armed with 

 one or two acute spinules at the distal ends of the inferior 

 margins of their outer surfaces ; the carpopodites present a 

 similar acute spinule at the distal ends of their upper margins. 

 The propodites are unarmed ; those of the legs of the second pair 

 and those of the right leg of the third pair have the usual cylin- 

 drical form, their outer surfaces being rather convex ; the pro- 

 podite of the left leg of the third pair, on the contrary, has a 

 somewhat trihedrous form, its outer surface being remarkably 

 flattened, so that the upper margin is rather acute. If Dana's 

 figure, 4y, of this joint is exact, then these specimens somewhat 

 differ from the Madeira type: in the latter this joint is rather 

 slender, the outer surface being a little more than three times as 

 long as high, and with nearly straight margins ; whilst in the 

 Mergui specimens the outer surface is only a little more than 

 twice as long as high and is bordered by a slightly arcuate 

 upper m.argiu. The dactylopodites are compressed, with some- 

 what convex outer and inner surfaces, except the dactylopodite 

 of the left leg of the third pair, the outer surface of which is 

 flattened or even slightly concave. The dactylopodites of these 

 two pairs of legs are all shorter than the propodites, measuring 



