1898.] A. Alcock — Cardiological Fauna of India. 121 



(4) the upper surface of the wrist aud hand is more rugose. It 

 resembles sanguineus in having 5 teeth on the antero-lateral margin, but 

 differs from it further in having 



(5) the front even narrower, it being less than one-fifth the 

 breadth of the carapace. 



It can at once be distinguished by the very narrow quadridentate 

 front. 



In the Indian Museum are 22 specimens, from the Andamans, 

 Karachi, Galle (and Australia). 



47. Xantho (Leptodius) nudipes (Dana), A. M. Edw. 



Chlorodius nudipes, Dana, Proc. Ac. Nat. Sci. Philad. 1852, p. 79, and U. S. 

 Expl. Exp. Crust, pt. I. p. 209, pi. xi. figs. 12a-c. 



Leptodius nudipes, A. Milne Edwards, Nonv. Archiv. da Mas. IX. 1873, p. 225 : 

 Miers, Cat. Crast. New Zealand, p. 17 : Filhol, Crust. New Zealand, p. 374 : de Man, 

 Journ. Linn. Soc. Zool., XXII. 1887-88, p. 33, and Zool. Jahrb. Syst. 1894-95, p. 523. 



Xantho exaratus var. nudipes, Ortmann, Zool. Jahrb. Syst. VII. 1893-94, p. 447. 



The whole surface of the carapace is very finely pitted or granular. 

 The antero-lateral border is divided into four acute lobes or teeth, but 

 each of the first three teeth have, at base, either one or two (one on 

 either side) small additional cusps, and the fourth tooth is generally 

 double, so that altogether there are from 8 to 11 teeth on the antero- 

 lateral margin. The fingers are broad and deeply hollowed at tip. The 

 upper surface of hand and wrist is granular and rugose. The lobes of 

 the front are deeply concave. 



In the convexity of the carapace and of its regions and subregions 

 it resembles sanguineus ; but the front is much broader than in sanguineus, 

 being more than one-fourth the breadth of the carapace, and the fingers 

 are typical spoons. 



In the Indian Museum are 17 specimens from the Andamans and 

 3 from Mergui. 



48. Xantho (Leptodius) euglyptus, n. sp. 



Form of carapace much resembling that of sanguineus, but much 

 more convex. 



Carapace § as long as broad, rather strongly convex in its anterior 

 two-thirds, flat posteriorly : its regions well delimited, convex, and as 

 completely areolated as any Actxa — the areolae being strongly convex 

 and somewhat pitted transversely. 



Front projecting beyond the orbit, from which it is separated by a 

 notch, cut into two lobes of which the outer angle is prominent much as 

 in crassimanus ; its breadth is not quite a third that of the carapace. 

 J ii. 16 



