394 A. Alcock — Garcinological Fauna of India. [No. 3, 



Archiv f. Nat. LIU. 1887, i. p. 365, and Journ. Linn. Soc. Zool. XX1T. 1888, p. 148 : 

 Cano, Boll. Soc. Nap. III. 1889, p. 236: Walker, Journ. Linn. Soc, Zool., XX. 1886- 

 1890, p. 110: Henderson, Trans. Linn. Soc, Zool., (2) V. 1893, p. 390: de Man, 

 Zool. Jahrb. Syst. IX. 1895-97, p. 80: Ortmann, Zool. Jahrb., Syst., 1893-94, p. 705 : 

 Wedenissow, Bull. Soc Ent. Ital. 1894, p. 415. 



Grapsus albo-lineatus, Lamarck, Hist. Nat. Anira. Sans Vert. V. p. 249 (fide Edw.). 



Gonioposis flavipes, Macleay, 111. Ann. S. Africa, p. 66, and Krauss, Sudafr. Crust. 

 p. 46 (apud Miers). 



Goniopsis strigosa, De Haan, Faun. Jap. Crust, p. 33 : Macleay, loc. cit. : Krauss, 

 loc. cit. 



Grapsus granulosus, pelagicus, aud Peroni, Milne Edwards, Ann. Sci. Nat. (3) 

 XX. 1853, p. 169 (fide A. M. E.). 



The chief differences between this species and G. grapsus are the 

 following : — 



The branchial grooves of the carapace are not so well cut, the 

 transverse and oblique ridges are low and smooth, and the surface 

 between the oblique ridges is quite smooth. 



The front is not so deep and is obliquely deflexed, hardly overhang- 

 ing the epistome and not concealing the antennules, and its free edge 

 is not so distinctly crenulate. The tooth at the inner angle of the orbit 

 is subacute. The length of the epistome is not nearly a third its 

 greatest breadth. 



In the chelipeds, the tooth at the inner angle of the wrist is 

 nearly straight, not talon-like, the length of the upper border of the 

 palm is nearly two-thirds the length of the dactylus, and the tips of the 

 fingers are not so broad and blunt. 



In the legs the meropodite is broader, its greatest breadth being 

 half its length. Moreover the difference in size between the 1st and 

 4th pairs of legs is much less marked. 



In the Indian Museum are 76 specimens, from the Baluchistan and 

 Sind coast, the Malabar coast, Ceylon, the Coromandel coast, the 

 Arakan and Tenasserim coast, Mergui, the Andamans, and the Nicobars. 



The carapace of the largest specimen (a female) is 59 millim. long 

 and 63 millim. broad. 



Geogkapsus, Stimpson. 



Geograpsus, Stimpson, Proc. Ac Nat. Sci. Philad. 1858, p. 101 : Kingsley, Proc. 

 Ac. Nat. Sci. Philad. 1880 ; pp. 188, 195 : Miers, Challenger Brachyura, p. 260. 

 Orthograpsus, Kingsley, I. c. pp. 188, 194. 



Closely resembles Grapsus, but differs in the following important 

 particulars :— - 



The carapace is more quadrate, the sides being very little arched, 

 it is also broader and less depressed. The lobe at the inner inferior 



