1899.] A. Alcock — Carcinological Fauna of India. 33 



Annexe F. p. 2 : Heller, "Novara" Crust, p. 26: Brocchi, Ann. Sci. Nat. (6) II. 1875. 

 Art 2, p. 55, pi. xvi. figs. 83, 84 (male appendages) : Miers, Cat. New Zealand Crnst. 

 p. 26, and Ann. Mag. Nat. Hist. (5) V. 1880, p. 238, and Challenger Brachyura, 

 p. 174 : Streets, Bull. U. S. Nat. Mus. VII. 1877, p. 106 : Haswell, Cat. Austral. 

 Crust., p. 77:Filhol, Crust. Nouv. Zel., Miss de I'ile Campbell, p. 382, F. Muller, 

 Verb. Naturf. Ges. Basel, VIII. 1886, p. 475:de Man, Archiv. f. Naturges. LIII. 

 i. 1887, p. 328, and in Weber's Zool. Ergebn. Niederl. Ost-Ind. 11.1892, p. 285 and 

 Zool. Jahrb., Syst. etc., VIII. 1894-95, p. 556 : Cano, Boll. Soc. Nat. Napol. III. 

 1889, p. 212 : Pfeffer, Mitt. Nathist Mus. Hamburg VII. 1889 (1890), No. 8, p. 6 

 (female dimorphism) : J. R. Henderson, Tr. Linn. Soo. Zool. (2) V. 1893, p. 368 : 

 Orfcmann, Zool. Jahrb., Syst. etc., VII. 1893, p. 75, and in Semon's Forschungsr. 

 (Jena. Denk Vlll) Crust, p. 45. 



Carapace very broad, little convex, its length in the middle line 

 half its breadth excluding the great lateral spines, finely granular 

 everywhere in the young but only in the anterior half in the adult, 

 crossed transversely by some slightly-raised granular lines — two on 

 the gastric, one on either branchial region — conspicuously marked 

 posteriorly by three large blood-red spots. 



Front cut into four sharp and very distinct teeth — not counting the 

 inner supra-orbital angles — of which the middle two are the less pro- 

 minent and have projecting between and far beyond them the spine-like 

 process of the epistome. Supra-orbital borders cut by 2 fissures into 

 3 lobes, the angles of the middle lobe not conspicuous. 



Antero-lateral borders very long and oblique, cut into 9 teeth 

 including the outer orbital angle) the last of which is about four times 

 as long as any of the others The posterior border, which is smooth, 

 forms a common curve with the postero-lateral borders. 



Antero-exteraal angle of merus of external maxillipeds not pro- 

 duced. 



Chelipeds in the adult male about 2| times the length of the cara- 

 pace, but rather less in the female and young male : the hand is the 

 most massive segment. Arm with 3 or 4 large spines on the anterior 

 (inner) border, but without any on the posterior border. Hand and 

 outer surface of wrist costate, the costae smooth : both inner and outer 

 angle of wrist strongly spinif orm : the palm, which is not, or only 

 slightly, longer than the fingers has two spines dorsally, one being in 

 front of the apex of the wrist-joint, the other just behind the finger- 

 joint. 



Legs smooth : a spinule near the far end of the posterior border 

 of the carpus of the first two pairs. 



A large species. 



In the Indian Museum are 60 specimens, from Penang, Nicobars, 

 «ast and west coasts of the Peninsula, Ceylon, and Karachi. 

 J. II. 5 



