4*16 A. Alcock— Carcinological Fauna of India. [No. 3, 



100. Sesarma Edwardsi, de Man. 



Sesarma Edwardsi, de Man, Zool. Jahrb., Syst., II. 1887, p. 649, and Jonrn. Linn. 

 Boo., Zool., XXII. 1888, p. 185, pi. xiii. figs. 1-4 : Ortmann, Zool. Jahrb., Syst., VII. 

 1893-94, p. 721. 



Differs from S. quadratum in the following particulars : — 

 (1) the carapace is squarer and less transverse, and the four post- 

 frontal lobes of the gastric region are more prominent; the front also 

 is slightly, but distinctly, broader : 



(3) there is a sharp tooth on the lateral border of the carapace 

 immediately behind the antero-lateral angle : 



(3) the upper border of the arm does not end in a spine, and though 

 there may be a slight subterminal dilatation of the crenulated inner 

 border of the arm there is no large spine : 



(4) there is a sharp tooth or spine just below the inner angle of the wrist : 



(5) the upper surface of the wrist and outer surface of the palm 

 are covered — usually very closely covered — with vesiculous tubercles ; 

 and there are smaller and sharper tubercles on the upper surface of the 

 dactylus and the lower surface of the fixed finger of the chelae : 



(6) there are no oblique pectinated crests on the palm : 



(7) the male abdomen is singularly broad. 



In the Indian Museum are 126 specimens, most of which came from 

 the Burma coast from Arakan to Tavoy, the rest from the Gangetic 

 delta, the Andamans and Ceylon. 



In the variety separated by de Man as crassimana the abdomen is 

 not quite so broad as it is in the typical form, and the palm of the 

 male is larger and more swollen. 



101. Sesarma intermedium (De Haan). 



Grapsus (Pachysoma) intermedins, De Haan, Faun. Japon. Crust, p. 61, pi. xvi. 

 fig. 5. 



Sesarma intermedia, Milne Edwards, Ann. Sci. Nat., Zool., (3) XX. 1853, p. 186 : 

 Sfcimpson, Proo. Ac. Nat. Sci. Philad. 1858, p. 105: Heller, Novara Crust, p. 64: 

 Kingsley, Proc. Ac. Nat. Sci. Philad. 1880, p. 216 : Miers, Ann. Mag. Nat. Hist. 

 (5) V. 1880, p. 314: de Man, Notes Leyden Mus. II. 1880, p. 25, and Zool. Jahrb., 

 Syst., II, 1887, p. 649, and Journ. Liun. Soc, Zool., XXII. 1888, p. 182 : Ortmann, 

 Zool. Jabrb. Syst. VII. 1893-94, p. 721. 



Differs from S. quadratum in the following particulars : — 



(1) the carapace is more quadrate and less transverse, the post- 

 frontal lobes are less prominent aud much smoother, and the front is 

 broader : 



(2) there is a tooth — and sometimes also a second rudimentary 

 tooth— on the lateral border immediately behind the orbital angle : 



