424 A. Alcock — Carcinological Fauna of India. [No. 3, 



111. Sesarma Finni, n. sp. 

 Near S. maculata, de Man. 



Carapace shallow, depressed, flat, perfectly square, its length being 

 equal to its breadth at the antero-lateral angles and its sides being 

 parallel : the regions are indicated, but not emphasized, and the 4 post- 

 frontal lobes are sharply prominent, the middle pair being much broader 

 than the outer ones. 



Front half the breadth of the carapace, deepish, its free edge nearly 

 straight : two little teeth on the lateral border of the carapace, behind 

 the outer orbital angle. 



In the chelipeds of the female the outer surface of the arm wrist 

 and hand are granular ; the upper border of the arm ends acutely, 

 and the inner border ends in a spine ; the inner angle of the wrist is 

 pronounced, but is not dentiform ; and the upper surface of the palm 

 is traversed, fore and aft, close to the upper border, by a fine and finely 

 milled ridge. 



Legs long and slender, the 3rd pair being more than 2| times the 

 length of the carapace : their meropodites are not foliaceous, being abonfc 

 three times as long as broad, and they have a subterminal spinule on 

 the anterior border only : their dactyli are long and slender, those of 

 the 3rd pair being more than three-fourths the length of the propodite : 

 the propodites and dactyli of all the legs are fringed with short stiff 

 sharp bristles. 



The species is represented by a small female from the Andamans : 

 its carapace is not quite 11 millim in either diameter. 



112. Sesarma longipes, Krauss. 



Sesarma longipes, Krauss, Sudafr. Crust, p. 44, pi. in. fig. 2 : Milne Edwards, 

 Ann. Sci. Nat., Zool., (3) XX. 1853, p. 199 : Kingsley, Proc. Ac. Nat. Sci. Philad. 

 1880, p. 216 : de Man, Zool. Jahrb., Syst., II. 1887, p. 651. 



The length of the carapace is equal to its breadth at the antero- 

 lateral angles, but as the lateral borders of the carapace diverge consi- 

 derably, from before backwards, the greatest breadth of the carapace (at 

 the level of the 2nd pair of legs) is considerably more than the length. 



Carapace deepish, very slightly convex ; its regions are not very 

 well defined, but the median longitudinal groove of the gastric region is 

 deep, and the 4 post-frontal lobes are sharply prominent, the middle pair 

 being much broader than the outer ones. 



Front half the extent of the anterior border of the carapace, the 

 free margin slightly sinuous : the divergent lateral borders of the 

 carapace have a tooth of good size behind the outer orbital angles. 





