92 A. Alcock — Carcinological Fauna of India. [No. 1, 



T. sima, adinefa etc., there is — behind all — another short ridge or linear 

 tubercle on either branchial region. 



Front proper straight, obscurely divided into 2 lobes (not including 

 the inner supra-orbital angles) by a notch that needs looking for with 

 a lens. Tlie inner supra -orbital angles are arched and their breadth is 

 not half that of either of the true frontal lobes. 



Antero-lateral borders nearly straight, cut into 5 teeth, of which 

 the first is the largest and the last two (which are co-equal) are very 

 much smaller than any of the others. 



Posterior border of dorsum of carapace straight, but forming a 

 curve with the postero-lateral borders ; its length is rather more than 

 half the greatest breadth of the carapace. 



Orbits with a distinctly dorsal inclination, large — their major 

 diameter being little less than half the width of the inter-orbital space — 

 the fissures in the upper border obscure, the inner angle of the lower 

 border not dentiform. 



Basal antenna-joint Goniosoma-like, its extreme extent being much 

 less than the major diameter of the orbit, its crest low and smooth. 



Chelipeds pilose, covered with transverse squamiform markings : 

 2 enlarged teetVi on the anterior border of the arm, none on the posterior 

 border : inner angle of wrist strongly spiniform, 2 or 3 inconspicuous 

 denticles on the outer angle: hand costate, with 4 or 5 (usually 4) 

 spines, of which only three (namely, the one in front of the apex of the 

 wrist-joint and the two along the inner border of the upper surface) are 

 visible to ordinary observation, the other 1 or 2 being lost in the general 

 squamiform granulation. 



Legs pilose, the first 3 pair with squamiform sculpture on the upper 

 surface : in the last pair the merus is nearly twice as long as broad, and 

 has the usual spine on its posterior border, and the propodite has a 

 smooth posterior border. 



Sternum with numerous transverse grooves— a sort of scutiform 

 sculpture — most conspicuous in the male. 



6th abdominal tergum of male a good deal broader than long, with 

 gradually convergent sides. 



7 specimens from off Ceylon, 28-34 fms., 1 from off Malabar 

 coast 26-31 fms., 3 from the Andaman Sea. 



A small species : the carapace of the largest egg-laden female is 

 9 millim. long and 13 millim. broad. 



Alliance III. Podophthalmoida, 

 PoDOPHTHALMUS, Lamk. 

 Todophthalmus, Lamarck, Syst* Anlm. sans. Vert. V. p. 152, and Hist. Nat. 



