1898.] A. Alcock — Carcinological Fauna of India. 87 



furrows cross transversely the region between tbe latter and the 

 posterior border of the carapace. On the branchial regions, on either 

 side of the mesogastric lobule, is a small dimpled lobule. The wrist 

 and hand are closely covered with granules like those on the carapace, 

 the wrist being dimpled and the hand longitudinally furrowed. 



The extensor surfaces of the legs are also closely, but much more 

 finely, granular, the carpus in all being dimpled. 



Antero -lateral borders four-lobed, the lobes narrow, rather shallow, 

 rounded, and the last three of nearly equal size. 



Colours in spirit ; dark purplish-red, legs lighter, fingers white 

 with brownish base. 



Two specimens, from Grt. Coco I. (Andamans) and East I., 

 Andamans are in the Indian Museum. 



Carapace not quite 6 millim. long, 10 millim. broad. 



Liomera, Dana. 



Liomera, Dana Silliman's Amer. Journ. Sci. and Arfcg (2) XII. 1851, p. 124; 

 Proc. Acad. Nat. Sci. Philad. 1852, p. 73 ; and U. S. Expl. Exp. Crust, pt. I. 

 p. 160. 



Liomera, A. Milne Edwards, Nonv. Archiv. du Mas. I. 1865, p. 218, and Exp. 

 Sci. Mex. Crust, p. 239. 



Carapace extremely broad, strongly convex in both directions, 

 transversely barrel-like, either smooth or with the regions very faintly 

 indicated ; its antero-lateral borders thick, either entire or divided into 

 four broad shallow rounded lobes, of which the first two are almost 

 coalescent ; its postero-lateral borders very strongly convergent, 

 straight or a little concave. 



Front narrow (from a third to less than a fourth the breadth of the 

 carapace), obliquely deflexed, grooved and slightly notched in the 

 middle line, but not distinctly bilobed. 



Orbits small, with the three suture lines near the outer angle 

 usually distinct ; eye-stalks short and thick. 



The antennules fold nearly transversely. Basal antennal joint broad 

 and short, merely touching the front ; the flagellum, which is short, 

 lodged in the orbital hiatus. 



Anterior edge of merus of external maxillipeds a little oblique. 



Chelipeds equal or subequal in both sexes ; fingers somewhat 

 hollowed at tip. Legs sub-cylindrical. 



Abdomen of the male five- jointed, the 3rd — 5th somites being 

 fused. 



Small or medium-sized crabs, easily recognized by their short, very 

 broad, strongly convex, barrel-like carapace. 



