Carcinological Fauna of India. 219 



Naxia hirta, Miers, 'Challenger' Brachyura, p. 61. 



Naxia petersii, de Man, Journ. Linn. Soc, Zool., Vol. XXII. 1888, p. 19. 

 Naxia hirta, Pocock, Ann. Mag. Nat. Hist., Vol. V. 1890, p. 79. 

 Naxia hirta, Henderson, Traus Linn. Soc., Zool. (2) V. 1893, p. 345. 



Carapace pyriform, with the regions well-defined and the surface 

 from the base of the rostral spines unevenly granular and tubercular. 

 From the rough surface there stand out (1) at least two good sized 

 spines on either branchial region, (2) a sharp unciform tubercle close 

 to the posterior border near the middle line, and (3) a stout nipple- 

 shaped tubercle near the middle of the pterygostomian region. 



The rostral spines, which in both sexes are close together and 

 parallel in more than half their extent, are from one-third (male) to two- 

 sevenths (female) the length of the carapace proper ; from the point 

 of origin of the accessory spines, which are situated at the end of the 

 parallel portion, they are elegantly divergent. 



The prominent supra-ocular eave has the antero-external angle 

 slightly upturned. The basal antennal joint has a stout spine anteri- 

 orly, and a coarse tooth in the middle of its outer border. 



The chelipeds are smooth, and are slender in both sexes, but most 

 so in the female : in the male they are equal in length to the post- 

 rostral, in the female to the post-ocular portion of the carapace : 

 the palms are slender and sub-cylindrical, and are twice the length 

 of the fingers, which latter are hardly arched, and are therefore but 

 slightly separated at the base when clenched. 



All the ambulatory legs are slender and smooth, and the first pair 

 are considerably the longest, being nearly twice the length of the 

 carapace and rostrum, the dactylus not being abnormally elongate. 



The body and legs are covered with a short fine down, and the 

 colour in spirit is usually mottled reddish and yellow. 



In the Museum collection are specimens from the Andamans and 

 from Ceylon. 



Naxia taurus, Pocock. 



Naxia taurus, Pocock, Ann. Mag. Nat. Hist. Vol. V. 1890, pp. 77 and 79. 

 Naxia taurus, Henderson, Trans. Linn. Soc, Zool. (2) V. 1893, p. 346. 



Distinguished by the very long and widely divergent rostral spines. 



Carapace pyriform, with the regions well-defined, and the surface, 

 from the base of the rostral spines, unevenly granular and tubercular 

 beneath tufts of hair. Among the tubercles three on the gastric region 

 in the middle line, three in a triangle on the intestinal region, and 

 three on either branchial region attract attention. 

 65 



