62 A. Alcock — Garcinological Fauna of hidia. [No. 1, 



on either branchial region and a bow-sliaped one on the cardiac 

 region. 



Front cut into 6 bluntly-rounded teeth (^not including the inner 

 supra-orbital angles) of nearly equal size. 



Antero-lateral borders cat into 6 teeth, of which the first (the outer 

 orbital angle) is blunt or truncated, the last is rather smaller than those 

 immediately in front, and the intervening four though anteriorly acute — 

 especially in the young — tend to grow blunt. 



The posterior border of the dorsal surface of the carapace forms a 

 curve with the postero-lateral borders. 



Orbit without any particular dorsal inclination, its major diameter 

 is about two-sevenths the width of the interorbital space : the inner angle 

 of the lower border is not prominent and hardly dentiform, the lobule 

 at the outer end of this boider though well defined is not dentiform. 



Chelipeds about 2f times as long as the carapace (in the adult 

 male), their under surface is covered with transverse squamiform 

 tubercles which are specially regular and distinct on the hand, their 

 other surfaces also are beset with tubercles which are more or less dis- 

 tinctly squamiform : the space between the tubercles is furred. Three 

 enlarged teeth (besides smaller ones) on the anterior border of the arm, 

 the posterior border unarmed. Inner angle of wrist strongly spiniform, 

 outer angle with three small spines. Hand beset with longitudinal 

 series of tubercles, and having 4 or 5 spines on the upper surface : 

 fingers about as long as hand. 



The merus of the last pair of legs is about two-thirds as broad as 

 long and has a strong spine on the posterior border, and the same 

 border of the propodite is armed with spinules that become very indis- 

 tinct with age. 



In both sexes the 2nd-4th abdominal terga are transversely 

 keeled : in the male the 6th tergum is as long as broad and has the 

 sides parallel or even slightly divergent in three-fourths of their extent. 



Colours in spirit, mottled, with much admixture of red, the ridges 

 of the carapace dark red. 



In the Indian Museum are 10 specimens from Ceylon, Madras, and 

 Pondicherry, besides 1 from Singapore. In the largest specimens the 

 carapace is about 70 millim. long and about 100 millim. broad. 



38. Charyhdis (Goniosoma) miles (De Haan), 



Portunris {Charyhdis) miles, de Haan, Faun. Japon. Crust, p. 41, pi. xi. fig. 1 : 

 Stimpson Proe. Ac. Nat. Sci. Philad. 1858, p. 39. 



Goniosoma miles, A. Milne Edwards, Archiv. du Mus. X. 1861, pp. 378, 385 : 

 Ortmann, Zool. Jahrb., Syst., VII. 1893, p. 81. 



Size medium : an adult female in the Indian Museum has the 

 carapace 43 millim. long and 59 millim. broad. 



