80 A. Alcock — Carcinological Fauna of India. [No. 1, 



Jahrbuch., Syst. VIII. 1895, p. 496 : Cano, Boll. Soc. Nat. Napol. III. 1889, p. 189 r 

 J. E. Henderson, Trans. Linn. Soc. Zool. (2) V. 1893, p. 353 : Ortmann, Zool. 

 Jahrbuch., Syst. VII. 1894, p. 469. 



Front obliquely deflexed, the median lobe very decidedly bilobulate 

 and separated from the lateral lobes on either side by a deep notch. 



Carapace with not less than eleven large roundish dark- red blots 

 (which seem never to competely fade even in very old Museum speci- 

 mens) disposed as follows : — two on either side immediately behind the 

 eye, the smaller and anterior one of these involving the orbital margin ; 

 three in a transverse curve across the middle of the carapace ; four in 

 another transverse line just in front of the posterior margin. 



Eight specimens, from the Andamans, Nicobars, and Palk Straits. 



2. Carpilius convexus, (Forskal) Riippell. 



Cancer convexus, Forskal, Descr. Anim. p. 88. 



Cancer adspersus, Herbst, Krabben, I. ii. 264, pi. xxi. fig. 1. 



Cancer marmarinus, Herbst, Krabben, III. iv. 7, pi. lx. fig. 1. 



Carpilius convexus, Ruppell, 24 Krabben roth. Meer. p. 13, pi. iii. fig. 2 

 and pi. vi. fig. 6: Milne Edwards, Hist. Nat. Crust. I. 382, pi. xvi. figs. 9, 

 10: DeHaan, Faun. Japon. Crust, p. 17 (name only) : Dana, U. S. Expl. Exp. Crust, 

 pt. I. p. 159, pi. vii. fig. 5 : Stimpson, Proc. Acad. Nat. Sci. Philad. 1858, p. 32 : 

 Heller, SB. Ak. Wien XLIII. 1861, p. 319 : Alph. Milne Edwards in Maillard's l'ile 

 Reunion Annexe F. p. 3, and Nouv. Archiv. du Mus. I. 1865, p. 215, and IX. 1873, p. 

 176: Hilgendorf in v. d. Decken's Reisen in Ost-Afrika III. i. p. 73 : Hoffmann in 

 Pollen and Van Dam, Faun. Madagasc, Crust, p. 3 : Miers, P. Z. S. 1877, p. 133, 

 and Ann. Mag. Nat. Hist. (5) II. 1878, p. 407 : Richters in Mobius Meeresfauna 

 Maurit. p. 145 : E. Nauck, Zeitschr. Wiss. Zool. xxxiv. 1880, p. 56 (gastric teeth) : 

 Haswell, Cat. Austr. Crust, p. 41 : F. Muller, Verb. Ges. Basel VIII. 1886, p. 473 : 

 de Man, Archiv. f. Naturges. liii. 1887, i. 232, and Zool. Jahrb. Syst. VIII. 1895, p. 

 496 : Ortmann Zool. Jahrbuch., Syst. etc., VII. 1894, p. 469, and in Semon's Zool. 

 Forschungsr. (Jena. Denkschr. VIII.) Crust., p. 51 : Zehntner, Rev. Suisse Zool. II. 

 1894, p. 143. 



Carpilius lividus, Gibbes, Proc. Amer. Ass. III. 1850, p. 174, is according to A. 

 Milne Edwards, vide Nouv. Archiv. du Mus. I. 1865, p. 217, the young of Carpilius 

 convexus. Miers also, Ann. Mag. Nat. Hist, (v) II. 1878, p. 407, considers C. lividus 

 to be a synonym of Carpilius convexus. 



Frout vertically deflexed, the prominent median lobe is not de- 

 cidedly bilobulate — in fact, it is sometimes but obscurely emarginate at 

 tip — and is separated on either side from the lateral lobes by only a 

 shallow excavation. 



Carapace irregularly marbled with dark red, which in old spirit 

 specimens sometimes fades entirely. 



Seven specimens from the Andamans and Nicobars. 



