182 Carcinological Fauna of India. 



The front distinctly projects beyond the eyes ; its margin is thin 

 and sharp and is cut into four teeth : the antero-lateral margins do not 

 run up to the level of the tip of the front, involving the orbits, as they 

 do in N. plicata. 



The granulation on the ventral surfaces, unlike that of N. plicata, 

 is hardly visible to the naked eye. 



The chelipeds in the adult male are 2h times, in not- quite-half -grown 

 males 1| times, and in adult females 1^ times the length of the carapace : 

 to the naked eye they are perfectly smooth : the outer edges of the arm, 

 wrist and hand are sharply carinate : the dactylus in the male is little 

 more than half the length of the outer edge of the hand. 



Uniform flesh-colour in spirit. 



Length of carapace in the adult male 14 to 15 millim., breadth 

 about 19 millim. ; in the adult female length 12 to 13 millim., breadth 

 about 16 millim. 



In the Indian Museum collection are 18 adult males, 8 adult 

 females, and 2 young males taken at various places along the Coro- 

 mandel coast, from Gaujam to Pondicherry. 



24. Nursia blanfordi, n. sp. Plate VII. fig. 5. 



Carapace, except that it is nearly as long as broad, of the same 

 general appearance as iu N~. plicata, Herbst, with the same two semi- 

 circular lobes on the posterior margin, and the same number of blunt 

 teeth on the lateral margin, — the teeth, however, being blunter, and 

 the first two on either side nearly confluent. 



The ridges that radiate from the centre of the carapace, though of 

 the same coarse and coarsely-granular form as in N. plicata, differ some- 

 what in arrangement : the median longitudinal ridge, the ridges that 

 run obliquely outwards to the hepatic margin on either side, and the 

 transverse ridge that unites the last lateral teeth across the carapace, 

 are the same ; but the epibrauchial ridges that run to the penultimate 

 lateral tooth on either side are so little oblique in the greater part of 

 their extent as to form an almost transverse crest across the carapace, 

 parallel with the first-mentioned transverse ridge and with the post- 

 erior margin. The triangle of denticles on the mid-gastric region, and 

 the denticle on the second transverse crest are as distinct and sharp, 

 especially in the male, as they are in N. hardwickii. 



The front has the form of a semi-circular foliaceous snout, project- 

 ing far beyond the eyes, and somewhat recurved upwards. 



Both the exopodite and the endopodite of the external maxillipeds 

 are traversed longitudinally by a raised line of enlarged granules. 



The chelipeds in the male are about If times, in the female about 

 187 



