1898.] A. Alcock — Carcinological Fauna of India. 119 



Xantho afiinis, De Haan, Faun. Japon. Crust, p. 48, pi. xiii. fig. 8 : Krauss, 

 Sudafr. Crust, p. 30. 



Xantho lividus, De Haan, O.c, I.e. fig. 6 : Miers, Zool. H. M. S. Alert, pp. 183, 

 214. 



Cancer inssqualis, Audonin and Savigny Descr. Egypte pi. v. fig. 7 (fide A. M. E.) 



Xantho exaratus var. typica, Ortmann, Zool. Jahrb., Syst., VII. 1893-94, p. 445 : 

 and in Semon's Forschungsr. (Jen. Denk. VIII) Crust, p. 50. 



Carapace moderately broad, moderately convex in the anterior two- 

 thirds, nearly flat in the posterior third, where also it is not areolated. 

 Gastric region well-defined, convex, fairly well areolated anteriorly, the 

 wings of the carapace on either side of it divided into about 5 low 

 lobules, three of which follow the contour of the antero-lateral border. 

 The surface of the carapace is non-granular, except sometimes in the 

 young. 



Front not very prominent, but projecting beyond the inner angle 

 of the orbit, from which it is separated by a notch ; bilaminar, the lobes 

 cut square, but with a slightly concave margin. 



Antero-lateral border cut into 4 acuminate teeth, not including the 

 outer angle of the orbit, or a small denticle below it. Postero-lateral 

 border equal in length to the chord of the antero-lateral border. 



Side wall of carapace, edges of upper surface of arm, and edo-es of 

 legs — but especially the upper edge of the meropodites — with a good 

 deal of hair. 



Chelipeds unequal in both sexes. Upper and outer surface of wrist 

 more or less dimpled or wrinkled ; a strong tubercle at inner an o>l e of 

 wrist. Hands usually smooth, but the upper surface has, very, com- 

 monly, some low fine transverse or reticulating wrinkles. Fingers laro-e, 

 thick, more or less fluted, not strongly toothed, meeting at tip only (in 

 the adult) where they are broadened and hollowed out. 



Legs with merus subcylindrical and smooth, carpus and propus 

 nearly smooth and sometimes very faintly grooved, dactylus granular 

 and furred along both edges as far as the claw. 



Abdomen of male five- jointed. 



Colours in spirit : dirty yellow or dirty green, sometimes mottled ; 

 fingers black. 



In the Indian Museum are more than 130 specimens, chiefly from 

 the Andamans, Mergui, Karachi, also from the Persian Gulf, Bombay, 

 Ceylon, Akyab and Penang. 



45. Xantho (Leptodius) sanguineus (Edw.) A. M. Edw. 



Chlorodins sanguineus, Milne Edwards, Hist. Nat. Crust. I. 402 : Dana Proc. Ac. 

 Nat. Sci. Philad. 1852, p. 79, and U. S. Expl. Exp. Crust, pt. I. p. 207, pi. xi. figs, 

 lla—ri : Heller, Novara Crust, p. 18 : Streets, Bull. U. S. Nat. Mus. VII. 1877. 

 p. 105. 



