166 DB. J. G. DE MAN ON THE POBOPHTHALMOUS 



as 9: 6-|^ (in M. distinctus as 9: 65) . The outer and the inner 

 surfaces of the hands are rather convex ; the outer surface is 

 quite smooth, but the inner is a little granular. The fingers 

 also much resemhle those of M. distinctus, but the strongly 

 curved mobile finger is armed with a denticulate, prominent, 

 triangular lobe nearly on the middle of its inner margin (as 

 in sorae Macrophthalmi), which is not found in the other species. 

 In younger individuals this lobe is less developed, and in still 

 younger specimens it is quite absent. The mobile finger is 

 granular along its upper margin. 



As regards the form of the ambulatory legs, and more especially 

 their relative length and the comparative length of their joints, 

 both species completely resemble one another ; but the meropo- 

 dites of the legs of the last three pairs are armed in M. elegans 

 with more spines along their upper margins, those of the last 

 pair being also armed with eight or nine spines *. 



Dimensions of the largest male specimen : — 



millim 

 Length of the cephalothorax 9^ 



Breadth of the cephalothorax (distance between the 



second antero -lateral teeth) 15 



90. Metaplax intermeditis, n. sp. (PI. XI. figs. 7-9.) 



Two male individuals of this new form were collected at 

 Mergui, along with specimens of the preceding species. 



In the shape and structure of its cephalothorax, this Metaplax 

 perfectly resembles M. elegans, except as regards the infraorbital 

 ridge and the abdomen of the male. In M. intermedins the 

 lateral margins are four- or five-toothed, just as in M. elegans, 

 the second tooth being somewhat larger than the first. The 

 infraorbital ridge is prolonged backwards, almost opposite to 

 the second lateral incision, and consists of 40-50 small teeth or 

 granules, similar to those of M. elegans ; but the first or innermost 

 four or five are lobuliform, being longer than broad, resembling 

 the infraorbital lobules of M. distinctus. These lobuliform teeth 

 gradually pass into the others, which have the form of granules. 



The male abdomen is also characteristic, being more enlarged 

 than that of M. elegans ; the first joint is triangular and rounded, 



* I may remark that in the species of Metaplax in which the meropodites 

 of the ambulatoi'y legs are spinulose, the spines are often worn off by the 

 animal, and therefore sometimes appear to be absent. 



