Car etiological Fauna of India. 247 



Criocarcinus superciliosus (Herbsfc), Guerin, Echv. 



Seba, III. xviii. 11 : Linnaeus, Syst. Nat., I. 2, 1047, No. 45. 



Cancer superciliosus, Herbst, Krabben, I. ii. 227, tab. xiv. fig. 89. 



Criocarcinus superciliosus, Guerin, Voy. Coquille, Zool., Vol. II. Crust., p. 19. 



Criocarcinus superciliosus, Milne-Edwards, Hist. Nat. Crust., I. 332. 



Criocarcinus superciliosus, A. Milne-Edwards, Nouv. Archiv. du Mus., VIII. 1872, 

 p. 242, pi. xii. fig. 3. 



Criocarcinus superciliosus, Kossmann, Keise Roth. Meer., Crust., p. 10, tab. iii. 

 fig. 6 (vide synon). 



Carapace pyriform, broadened anteriorly by the antler-like "orbits," 

 with the hepatic regions sunken, and the other regions fairly distinct : 

 in addition to numerous pearly tubercles, which are tufted with curly 

 bristles, the carapace is armed with several large knob-tipped spines, 

 namely two in the middle line on the gastric region, one in the middle 

 line on the posterior border, one on either side near the boundary of 

 the hepatic and branchial regions, and one, directed obliquely back- 

 wards, near the middle of either branchial region. 



The rostrum consists of two vertically deflexed spines, the bases of 

 which are broadened and fused together, and the points of which are 

 divergent and elegantly curved. 



The eyes and orbits have already been described in a genei^al way : 

 the long semi-tubular supra-ocular hood ends in three diverging tines, 

 and the long post-ocular spine has its anterior border armed with two 

 or three denticles. 



The external maxillipeds have the outer edge thin and sharp, the 

 outer edge of the ischium being emarginate, and the outer ano-le of the 

 merus being produced. 



The chelipeds are shorter than the other trunk-legs, and are about 

 as long as the carapace behind the level of the post-ocular spine. In 

 the male they are slightly stouter than the other legs, and have the 

 palm a little swollen : in the female they are slenderer than the other 

 legs, and have the palm slender and a little tapering. 



Of the ambulatory legs, which are hairy, the first two pairs are 

 slightly the longest, both being rather less than one-third longer than 

 the post-rostral portion of the carapace : the last two pairs are not 

 much shorter. 



In the Museum collection are specimens from the Andaman Islands. 



Stenocionops, Latr. 



[Stenocicmops, Latreille, R. A., (2) IV. 59.] 

 Stenocionops, Milne-Edwards, Hist. Nat. Crust., I. 337. 



" Carapace narrow, uneven, and armed posteriorly with a large 

 triangular prolongation which covers the base of the abdomen. The 

 93 



