212 A. Alcock — Carcinological Fauna of India. [No. 1, 



The chief difference between this species and E. orientalis and 

 maculatus appears to be in form of the hand and fingers of the larger 

 cheliped. 



136. Eurycarcinus maculatus, (A. M. Edw.) de Man. 

 Pilumnopeus maculatus, A. Milne Edwards, Ann. Soc. Entora. France, (4) VII. 

 1867, p. 277 ; and Nouv. Archiv. du Mns. IV. 1868, p. 82, pi. xix. figs. 17-19. 



Eurycarcinus maculatus, de Man, Journ. Linn. Soc. XXII. 1887-88. p. 44, pi. ii. 

 figs. 2 and 3 (not 3 and 4). 



The Mergui specimen described by de Man does not appear to be in 

 the Indian Museum. 



This species agrees with E. orientalis in the form of the chelipeds 

 (hand and thumb), and appears to differ from that species only in having 

 a longer and more deeply cut-up antero-lateral border. 



Nectopanope, Wood-Mason. 



Nectopanope Wood-Mason, Ann. Mag. Nat. Hist. March, 1891, p. 261. 



Carapace broad, approaching the quadrilateral, convex fore and 

 aft, the branchial regions so inflated and convex dorsally as to make the 

 transverse plane of the carapace strongly concave in the middle line, 

 the other regions obscurely defined, the surface smooth. 



The antero-lateral borders are very much shorter than the postero- 

 lateral, are very thin and sharp, and are cut into teeth of which the 

 first is confluent with the outer orbital angle. 



Front broad, a third the greatest breadth of the carapace, straight, 

 square cut, slightly projecting beyond the supra-orbital angle, from 

 which it is sharply cut off by an angular notch, on either side. 



Orbits large, with a thin, sharp, prominent margin ; a notch 

 internal to the middle of the upper margin, the notch breaking this 

 margin into two curves, one corresponding to the eye-stalk the other to 

 the cornea : eyes large, reniform, on moderately stout stalks. 



Antennules folding transversely. The basal antennal joint is very 

 short, but almost touches the turned down side-edge of the front : the 

 flagellum, which is considerably longer than the major diameter of the 

 large orbit, springs from the rather broad orbital hiatus. 



The buccal cavern is broader anteriorly than posteriorly, and the 

 mouth parts do not nearly reach its front edge, so that a wide and 

 permanent gap is left : the crests of the endostome are not very strong, 

 but the free edge of the endostome corresponding to the efferent 

 branchial channel, on either side, is deeply excavated. The outer wall 

 of the efferent branchial canal forms a strong angular bulge in the 

 pterygostomian region. 



