Carcinological Fauna of India. 185 



The pterygostomian region is traversed by a sharp ridge that runs 

 parallel with the antero-lateral border. 



The external maxillipeds, the edge of the sternum, and the entire 

 edge of the fossa that receives the abdomen, are ornamented with 

 beadlike granules, in the male. 



The chelipeds in the male are a little more than half again as lonf 

 as the carapace and in the female are not one-fourth longer than the 

 carapace: the arm is sharply trigonal, with all the edges granular and 

 the surfaces smooth : the upper surface of the wrist and hand are 

 traversed, up to the finger cleft, by a sharply-raised beaded ridge : the 

 fingers are about two-thirds the length of the hand, and meet only at tip. 



The abdomen of the male consists of three pieces, the long middle 

 piece having a sub-terminal denticle. 



Colours in spirit : yellowish-brown mottled with greenish-brown, 

 which on the arm, on the base of the hand, on the base of the fingers, 

 and on the legs, forms cross-bands. 



Eight males and five adult females, from Karachi, the carapace of 

 the largest male and female being 9 millim. long, and 10 millim. broad. 

 Three very young specimens from the Coroinandel coast are almost 

 certainly this species. 



28. Nursia rubifera, Miiller. 



Nursia rubifera, Miiller, Verliandl. Naturforsch. Ges. Basel, VIII. 1886, p. 480, 

 pi. iv. figs. 4, 4a, 4b. 



Carapace broader than long, outline oval, — very inconspicuously 

 polyhedral, edge cockled and finely granular. Front prominent, bilobed. 

 Two isolated granular tubercles in the middle line — one in the gastric, 

 one (smaller) in the cardiac region ; but no ridges. Outer border of 

 exognath strongly curved. Chelipeds in the male about half again as 

 long as the carapace : arm sharply trigonal, with all three edges gra- 

 nular : a sharp longitudinal ridge on upper surface of hand : fingers 

 meeting throughout their extent. 



Irregular lilac stripes on the carapace and cross-bands on legs. 



Loc. Trincomalee. 



Not in the Indian Museum collection. Known here only from 

 Miiller's description and figures. 



The species, as Miiller says, is nearest allied to N. abbreviata, and 

 is also closely related to N. persica. 



Ebalia, Leach. 



Ebalia, Leach, Malac. Pod. Brit, text of pi. xxv. and Zool. Misccll. III. p. 18. 

 Ebaliu, Milue Edwards, Hist. Nat. Crust. II. 128. 



190 



