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



;>s long as broad, the regions well demarcated, well areolated, finely and 

 closely granular. 



Front horizontal, square-cut, prominent, sublaminar, notched and 

 grooved in the middle line. 



Anterolateral borders cut into four blunt-pointed rather coarse 

 granular teeth, of which the two posterior are the strongest. 



Chelipeds subequal : wrist and hand covered with granular fungi- 

 form tubercles, which are arranged in regular longitudinal series on the 

 hand. 



Upper border of meropodites of legs without spinules. 



In the Indian Museum is a single small male from off the Ganjam 

 coast, 7J-9J f ms. 



Henderson (Trans. Linn. Soc. (2) V. 2893, p. 360) appears to consi- 

 der this species to belong to the genus Halimede, but it has not — if my 

 identification be correct — the curious male abdomen which distinguishes 

 that genus from every other Xanthoid except Polycremnus. 



Cycloxanthus, A. Milne Edwards. 



Cycloxanthus, A. Milne Edwards, Ann. Sei. Nat., Zool. (4) XX. 1863, p. 278 ? 

 Nouv. Archiv. da Mas. IX. 1873, p. 209 ,- Miss. Sci. Mex., Crust, p, 258. 



Carapace relatively long : front horizontal, prominent, and divided 

 by a median fissure into two lamellar lobes, and separated from the 

 internal orbital angles by a deepish notch. 



Orbits small : two fissures in the supra-orbital margin : external 

 orbital angles inconspicuous, continuous with the antero-lateral borders. 



Antero-lateral borders very long, strongly curved, extending far 

 backwards. 



Basal antennal joint short, but touching the front at its inner- 

 angle : the flagellum inserted in the orbital hiatus. 



Merus of the external maxillipeds subquadrilateral. 



The abdomen of the male consists of five movable pieces. 



This genus is not represented in the Indian Museum. 



51. Cycloxanthus lineatus, A. Milne Edwards. 



Cycloxanthus lineatus, A. Milne Edwards, Ann. Soc. Entora. France, (4) VII. 

 1867, p. 269, and Nouv. Archiv. du Mus. IX. 1873, p. 209, pi. vi. fig. 5 : Miers, Zool. 

 H. M. S. Alert, pp. 183, 212: J. R. Henderson, Trans. Linn. Soc, Zool., (2) V. 1893, 

 p. 360. 



Carapace broad, very depressed, smooth ; the regions little defined • 

 antero-lateral borders prolonged far backwards and obscurely divided 

 into four dentiform lobes. 



