1900.] A. Alcock — Oar etiological Fauna of India. 417 



(3) there is no large subterininal spine on the inner border of the 

 arm, nor does the npper border end in a spine : 



(4) in the corner of the upper surface of the palm there are in the 

 male some oblique granular lines, but no pectinated crests ; and on the 

 inner surface of the palm there is a conspicuous transverse granular 

 crest : 



(5) the upper surface of the dactylus of the male chelae is granular 

 in its proximal half, but is not milled with transverse lamellae. 



From 8- JEdwardsi it is distinguished by numerous characters, but 

 the absence of a spine at the inner angle of the wrist is sufficiently 

 characteristic. 



In the Indian Museum are 5 specimens from Mergui. 



102. Sesarma Meinerti, de Man. 



Sesarma Meinerti, de Man, Zool. Jahrb., Syst., II. 1887, pp. 648, 668, and IX. 

 1895-97, p. 166 : Burger, Zool. Jahrb. Syst. VII. 1893-94, p. 617, and Ortmann, ibid. 

 p. 720. 



Sesarma tetragona, Edw. (nee Fabr.), Milne Edwards, Hist. Nat. Crust. II. 73, 

 and Ann. Sci. Nat., Zool., (3) XX. 1853, p. 184: A. Milne Edwards, Nouv. Archiv. 

 du Mus. IV. 1868, p. 71, and IX. 1873, p. 304, pi. xvi. fig. 4 : Hilgendorf, in v. d. 

 Decken's Reisen Ost-Afr., Crust, p. 90: Hoffmann, in Pollen & Van Dam, Fann. 

 Madag. Crust, p. 23: Hilgendorf, MB. Ak. Berl. 1878, p. 809: Kingsley, Proc. Ac. 

 Nat. Sci. Philad. 1880, p. 218. 



Carapace convex, especially fore and aft, a little broader than loug, 

 deep: the 4 post-frontal lobes prominent, unequal — the outer ones being 

 much narrower than the middle pair ; the cardiac and intestinal regions 

 are quite distinct, and the usual oblique striations are found on the 

 epibranchial regions : the whole dorsal surface of the carapace is rather 

 profusely covered with tufts of hair. 



Front decidedly more than half the greatest breadth of the 

 carapace, which is just behind the orbital angles, not very deep, its free 

 edge sinuous. Lateral borders of the carapace somewhat sinuous, 

 armed with a large tooth behind the orbital angle : there may even be 

 a trace of a second epibranchial tooth. 



Chelipeds subequal, almost equally massive in both sexes, about 

 twice as long as the carapace. The outer surface of the arm and wrist 

 is finely rugose, that of the palm is only pitted : neither the upper nor 

 the inner border of the arm end in a tooth : inner angle of wrist 

 pronounced but not dentiform : no pectinated crests of any kind on the 

 palm : the fingers are a good deal arched and meet only at tip, the upper 

 surface of the dactylus in the male has a row of inconspicuous denticles : 

 on the inner surface of the palm there is an oblique granular crest. 



