414 Carcinological Fauna of India. 



■ of tlie carapace in the male and much moi'e massive than the legs, but 

 in the female hardly 1| times the length of the carapace and not more 

 massive than the legs. In both sexes the outer surface of the arm 

 wrist and palm are granular, the granules on the arm and wrist having 

 a sqnamiform arrangement, the inner border of tlie arm bears a 

 subterrainal spine of large size, the upper border of the arm ending 

 in a much smaller spine, the inner angle of the wrist is not dentiform, 

 and the inner surface of the palm is more or less granular. In the 

 male the palm is a little swollen below and has, on its upper surface, 

 some short oblique crests, of which two are most elegantly pectinated : 

 S %>. r.u *'\ in the female the palm is not swollen and the crests are simply granular. 

 ' The dactylus is less than twice the length of the upper border of the 



hand (palm) and its dorsal surface is elegantly milled with from 11 to 19 

 blunt, rather coarse, transverse lamella : in the female this milling is 

 incomplete and veiy indistinct. In neither sex is there any great gap 

 between the closed fingers. 



The meropodites of the legs are foliaceous, their greatest breadth 

 in the 2nd and 3rd pairs being more than half their length, their 

 anterior border ends at an acute subterminal spine, and their dorsal 

 surface has some fine transverse squamiform sculpture. The anterior 

 border of the last three joints of the legs, and part of the posterior 

 border of the last two, is fringed with tufts of bristles. The 3rd pair 

 of legs, which are slightly the longest, are about twice the length of 

 the carapace, and their dactylus is about three-fourths the length of 

 their propodite. 



In the Indian Museum are 42 specimens from both coasts of the 

 Peninsula, Ceylon, the Andamans and the Nicobars. 



In a male of good size the carapace is 16 millim. long and 20 

 mi Him. broad. 



98. Sesarma pictum, De Haan. 



Grapsus {Pachysoma) pictus, De Haan, Faun. Japon, Crust, p. 61, pi. xvi. fig. 6. 

 Sesarma picta, Krauss, Sadafr. Crust, p. 45 : Milne Edwards, Ann. Sci. Nat., 

 Zool., (3) XX. 1853, p. 184 : Stimpson, Proc. Ac. Nat. Sci. Philad. 1858, p. 106 : 

 de Man, Notes Leyden Mus. II. 1880, p. 22, and Zool. Jalirb., Syst., II. 1887, p. 657, 

 and IX. 1895-97, pp. 181, 182, and Journ. Linn. Soc, Zool., XXII. 1888, p. 171 : 

 Biirger, Zool. Jahrb., Syst., VII. 1893-94, p. 626 : Ortmann, Zool. Jahrb., Syst., 

 VII. 1893-94, p. 725. 



Agrees with S. quadratum in everything but the following parti- 

 culars : — 



(1) the carapace is not so broad, its length being about five-sixths 

 of its breadth between the antero-lateral angles : 

 756 



