I 



1900.] A. Alcock — Carcinological Fauna of India. 355 



which is the more prominent, is oblique and runs to the lower border of 

 the same finger. In the adult male the fingers of the large hand are 

 about twice the length of the upper border of the palm: the}' are not 

 very broad, and owing to the hook-like curve of the dactylus there, is "a 

 wide space between them when the tips are apposed : the immobile 

 finger is but slightly curved, and is generally shorter than the dactylus, 

 and owing to the presence of an enlarged tooth near the tip, the tip has 

 a characteristic notched-truncate appearance. 



The meropodite in the last pair of legs is not at all foliaceous. 



The carapace in the adult male is about 11 millim. long and 19 

 millim. broad. 



In the Indian Museum are 300 specimens from all parts of the 

 coast from Karachi on the west to Mergui on the east. 



This species is not, as Miers queries, the same as Stimpsbn's 

 G. splendidus, of which we have numerous specimens from Hongkong. 



49. Gelasimus lacteus (De Haan). 



Ocypode (Gelasimus) lactea, De Haan, Faun. Japon., Crust., p. 54, pi. x v. fig. 5. 



Gelasimus lacteus, Milne Edwards, Ann. Sci. Nat., Zool., (3) XVIII. 1852, pi. iv. 

 fig. 16: Stimpson, Proc. Ac. Nat. Sci. Philad. 1858, p. 100: Miers, P. Z. S. 1879, 

 pp. 20, 36: Kingsley, Proc. Ac. Nat Sci. Philad. 1880, p. 149, pi. x. fig. 28: Cano, 

 Boll. Soc. Nat. Napol. III. 1889, p. 234: de Man , Notes Lejden Mus. XIII. 1891, 

 p. 22: Ortmann, Zool. Jahrb., Syst., Til. 1893-94, pp. 752, 759. 



Uca lactea, Ortmann, Zool. Jahrb., Syst., X. 1897-98, pp. 351, 355. 



Easily distinguished from G. aimulipes, which is its nearest relative, 

 by the following characters : — 



(1) the carapace is much more nearly quadrangular, the posterior 

 border of its dorsum being between three-fifths and two-thirds of its 

 greatest breadth, and its true lateral borders being parallel, while the 

 lateral borders of its dorsum are nearly so : 



(2) in the larger cheliped of the male the outer end of the npper 

 border of the arm, and the inner border of the wrist, are distinctly 

 denticulated; the dactylus is not so strongly hooked, and the end of the 

 immobile finger though obliquely truncate has an acuminate tip — never 

 a notched-truncate tip : 



(3) the colour, in spirit specimens, has a sort of livid bloom never 

 seen in G. annulijpes. 



In the Indian Museum are 47 specimens from Karachi and 3 from 

 the Andamans. 



[Gelasimus inversus , Hoffmann. 



Gelasimus inversus, Hoffmann, in Pollen and van Dam, Faun. Madagasc. €rust. 

 p. 19, pi. iv. figs. 23-26 (1874) : Kingsley, Proc. Ac. Nat. Sci. Philad. 1880, p. 155 



