46 A. Alcock — Carcinological Fauva of India. [No. 1, 



1868, p. 70 and IX. 1873, p. 161 ; Streets, Bull. U. S. Nat. Mus. VII. 1877. p. 109 : 

 Miers, Phil. Trans. Roy. Soc. Vol. 168, 1879, p. 488, and Zool. H. M. S. Alert, pp. 

 230, 538 : Richters in Mobius Meeresf. Maurit. p. 152 : Muller, Verb. Nat. Ges. 

 Basel Vlir. 1886, p. 475 : de Man, Archiv. f . Natur^es. LIII. 1887, i. p. 331 : Cano. 

 Boll. Soc. Nat. Napol. III. 1889, p. 214 : J. R. Henderson, Trans. Linn. Soc. Zool. 

 (2) V. 1893, p. 371. 



Neptunus (Achelous) granulatus, Miers, Challenger Brachynra, p. 180 : Thall- 

 witz, Abh. Zool. Mus. Dresden, 1890-91, No. 3, p. 48: Ortmann, Zool. Jahrb. Syst. 

 VII. 1893-94, p. 72, and in Semen's Zool. Forschungsr. (Jena. Denk. VIII.) Crust, 

 p. 45 : de Man, Zool. Jahrb. Syst. VIII. 1894-95 p. 558. 



Carapace depressed, a little over three-quarters as long as broad, 

 finely subtomentose, its surface cut up into well-defined sub-regional 

 elevations the convexities of which are granular. 



Front slightly receding, slightly prominent beyond the blunt inner 

 supra-orbifcal angles and beyond the epistome, cut into four lobes (not 

 counting the inner supra-orbital angles) of which the middle two are 

 the smaller and less prominent and are often almost coalescent. Supra- 

 orbital border with two distinct fissures. 



Antero-lateral borders very slightly oblique, cut into 9 teeth 

 (including the outer orbital angle) of which the last is but little bigger 

 than any of the others which it quite resembles in shape. The posterior 

 border forms a common curve with the postero-lateral borders. 



Orbits not completely dorsal : eyes not very large. Antero-external 

 angle of merus of external maxillipeds considerably produced in a 

 lateral direction. 



Chelipeds in the male about 2|- times the length of the carapace, 

 more or less granular, the hand not or little less massive than the arm. 

 Arm with 4 or 6 spines on the anterior border, and with 2 on the poste- 

 rior border — one submedian the other subterminal : outer border of 

 wrisb subcarinate up to a terminal spinule, inner angle of wrist strongly 

 spiniform : hand costate, with a blunt spinule in front of the apex of the 

 wrist-joint and a sharp spine some distance behind the finger-joint. 



First three pair of legs rather slender. 



Third abdominal tergura in both sexes strongly and sharply cari- 

 nate. 



Colours of good fresh spirit specimens pale yellow, the dorsal sur- 

 face of the carapace and chelipeds profusely mottled and speckled with 

 grey and dark red. 



A small species : egg-laden females have the carapace 12 millim. 

 long and 15 millim. in total breadth, but adult males are half again 

 as big. 



In the Indian Museum are 140 specimens from the Andamans and 

 Nicobars, Persian Gulf, Mergui, Ceylon, and Malabar coast, (besides 

 3 from Mauritius and 2 from Upolu). 



