1899.] A. Alcock — Carciiiological Fauna of India. 21 



•Carapace slightly broader than long, sub-circular, convex with thin 

 edges, smooth except for a more or less distinct ridge or elevation 

 running obliquely inwards from the last tooth of either antero-lateral 

 border. 



Front projecting a little beyond the supra-orbital angles (which 

 are not well pronounced), arched, entire though dorsally concave in the 

 middle line, its breadth is between a half and a third the greatest 

 breadth of the carapace. 



Antero-lateral borders curved, divided into five lobes, or, rather, 

 broad flat puckers. 



Orbits small, their major diameter is about a fourth the width of 

 the inter-orbital space : two closed fissures near the outer end of the 

 upper margin; inner angle of lower margin dentiform but not pro- 

 minent. 



Antennal flagella short. 



Chelipeds a little longer than the carapace : inner angle of wrist 

 dentiform : upper surface of hand with two carinas, each ending in a 

 blunt tooth, there is also a little tubercle in front of the apex of the 

 wrist joint and an obscure ridge along the outer surface : fingers stoat, 

 a little shorter than the palm, the dactylus sharply carinate dorsally. 



Legs stout, slightly shorter than the chelipeds, the merus of the 

 last pair is about twice as long as broad and its posterior border, like 

 that of the propodite, is smooth. 



Colours very characteristic : carapace dark maroon (chocolate in 

 spirit) with symmetrical yellow markings, chelipeds and legs cross- 

 banded yellow and maroon. 



In the Indian Museum is a single egg-laden female from Kiltan I. 

 (Laccadives) : its carapace is 10 millim. long and 11*5 millim. broad. 



6. Lissocarcinus Isevis, Miers. 



Zissocarcinus Isevis, Miers, Challenger Brachyura, p. 205, pi. xvii, fig 3 : J. R. 

 Henderson, Trans. Linn. Soc. Zool., (2) V. 1893, p. 378. 



Carapace distinctly broader than long, convex, perfectly smooth. 



Front a little prominent beyond the well pronoanced supra-orbital 

 angles, divided into two broad lobes, its breadth (not including the 

 supra-orbital angles) is barely a third the greatest breadth of the 

 carapace. 



Antero-lateral borders curved, cut into 5 blunt lobes, of which the 

 first and last are the smallest. 



Orbits large, their major diameter nearly half the width of the 

 inter-orbital space, their upper border entire, though traces of the two 

 sutures may be visible. 



