248 A. Alcock — Carcinological Fauna of India. [No. 2, 



rostrum is formed of two styliform divergent horns. The supra-ocular 

 border is armed with a horn similar to those of the rostrum, but 

 directed more obliquely. The eye-stalks are slender, immobile and 

 extremely salient ; their length is half the greatest breadth of the 

 body. The first joint of the antennae is much longer than broad, the 

 second is slender and is inserted beneath the rostrum. 



The epistome is nearly square, and the external maxillipeds have 

 the merus extremely dilated at the antero-external angle, and exca- 

 vated at the antero-internal angle. The trunk-legs, in the female, 

 are slender and cylindrical: those of the first pair (chelipeds) are 

 hardly stouter and are much shorter than the second, which latter 

 are a little longer than the carapace and rostrum : the others diminish 

 very gradually in length : all the ambulatoiy legs have sharp, recurved 

 dactyli. The abdomen of the female consists of five segments, the 

 4th, 5th and 6th segments being fused together." (Edw.) 



Stenocionops cervicornis (Herbst). 



Cancer cervicornis, Herbst, Krabben, III. iii. 49, pi. lviii. fig. 2. 



[Stenocionops cervicornis, Guerin, Icon. Regne An., Crust., pi. 8 bis, fig. 3]. 



Stenocionops cervicornis, Milne-Edwards, Hist. Nat. Crust., I. 338. 



Stenocionops cervicornis, Cuvier, Regne Animal, Crust., pi. xxxi. fig. 1. 



Stenocionops cervicornis, and ? curvirostris, A. Milne-Edwards, Ann. Soc. Ent., 

 France, (4) V. 1865, p. 135 (pi. v. figs. 1-le.) 



Stenocionops cervicornis, E. Martens, Verh. zool. bot. Ges., Wien, XVI. 1866, 

 p. 379. 



[Stenocionops cervicornis, Cano, Boll. Soc. Nat., Napol., III. 1889, p. 177.] 



Stenocionops cervicornis, Henderson, Trans. Linn. Soc, Zool., 1893, p. 343. 



" Carapace uneven and tuberculated : rostral and supra-ocular 

 'horns slender, very long, and nearly co-equal : two large conical ele- 

 vations on the sides of either hepatic region : antennas shorter than 

 the rostrum : chelae finely toothed and a little incurved : legs smooth." 

 (Edw.) 



Alliance III. Pericekoida. 



Micippa, Leach. 



ilicippa, Leacb, Zool. Miscell., III. p. 16. 

 Micippe, Desmarest, Consid. Gen. Crust., p. 148. 

 Micippe, Milne-Edwards, Hist. Nat. Crust., I. 329. 



Micippa, Miers, Journ. Linn. Soc, Zool., Vol. XIV. 1879, p. 661 ; Ann. 

 Nat. Hist., Vol. XV. 1885, p. 3 ; and ' Challenger ' Brachyura, p. 69. 



Carapace nearly oblong, depressed, rounded behind, broadened 

 anteriorly, and ending at a broad, lamellar, more or less vertically 



