1896.] A. Alcock — Carcinological Fauna of India. 181 



carinate, — the carina being coarse and granular ; the base of its upper 

 surface, the inner border, and the base of the under surface and the 

 under border are also granular to the naked eye : the outer edges of the 

 ■wrist and hand are coarsely and inconspicuously carinate : the fingers 

 are stout, are rather strongly bent inwards, and have the opposed edges 

 almost edentulous : the dactylus is more than three-quarters the length of 

 the outer border of the hand,, in both sexes. 



The true legs are not much longer than the arm, and are com- 

 pressed : in all the merus and propodite are sharply carinate dorsally 

 and ventrally, the carpus has two sharp dorsal crests, and the dactylus 

 is closely pubescent. 



The abdomen of the male consists of two linear basal pieces and a 

 small triangular apical piece, and between the two a long triangular 

 plate with a median sub-terminal tooth. 



Length of carapace of the largest male, 15 millim., breadth 20 mil- 

 lim. : length of carapace of largest female 16 millim., breadth 22 millim. 



Old spirit specimens are uniform flesh-colour : but fresh spirit 

 specimens are a bright brick red, with the wings of the carapace, and 

 a medium longitudinal band including the front, yellowish white. 



In the Indian Museum are 8 adult males, 6 adult and egg-laden 

 females, and one young, from the Orissa Coast, Tinnevelly coast, Palk 

 Straits, Bombay, Karachi, and the Persian Gulf. [Besides these there 

 are 4 adult females and a male from Hongkong]. 



23. Nursia hardwichii, Leach. 



Nursia hardwichii, Leach, Zool. Miscell. III., p. 20 : Desmarest, Consid. 

 Crust, p. 165 : Milne-Edwards, Hist. Nat. Crust. II. 137. 



Nursia plicata, Bell, Trans. Linn. Soc. Yol. XXI. 1855. p. 307, pi. xxxiv. fig. 4, 

 and Cat. Leucos. Brit. Mus., p. 19 (nee Herbst) : Stimpson, Proc. Ac. Nat. Sci. Philad. 

 1858. p. 161 (?): Miers, Trans. Linn. Soc Zool., (2) I. p 240, pi. xxxviii. fig. 28 : 

 Haswell, Cat. Austral. Crust, p. 127 (?) : de Man, Notes Leyden Mus. III. 1881, 

 p. 129 : A. 0. Walker, Journ. Linn. Soc, Zool., Vol. XX. p. Ill (?) : J. R. Henderson, 

 Trans. Linn. Soc, Zool., (2) V. 1893, p. 404. 



The general form is that of N. plicata Herbst, but much finer and 

 cleaner cut ; and with the anterior part of the carapace narrower and 

 the front projecting. 



The posterior margin of the carapace has the form of two sharp-cut 

 laminar teeth ; and the three last teeth on either lateral margin are thin 

 and sharp. 



The crests on the carapace are thin and sharp, and very finely 

 granular ; and the elevation from which they radiate is defined by three 

 sharp denticles : the transverse ridge that unites the two last marginal 

 teeth across the carapace culminates, in the middle line, in a denticle. 



