Boone, Crustacea, Cruises of "Ara" and "Alva" 227 



The chelipeds of the female are subequal, 170 millimeters 

 long, with three, strong, procurved teeth on the anterior, upper 

 meral margin and one distal spine at the terminus of the pos- 

 terior meral margin; the carpus has three incomplete, unequal 

 carinae on the upper surface, the outermost of which terminates 

 in a sharp spine at the external carpal angle ; the second of these 

 carina is interrupted about two-thirds of the length of the car- 

 pus, but there is a small spinule on the distal carpal margin in 

 line with this carina; there is a very strong spine at the inner 

 carpal angle. The propodus is massive, high, slightly longer than 

 the finger, decidedly costate, with the uppermost two carinae 

 each terminating distally in a sharp spine ; there is a third very 

 strong spine at the proximal end of the third carina opposite the 

 wrist joint; the fourth carina is midway the outer fpce of the 

 palm and terminates subdistad to the base of the fingers ; there 

 is a conspicuous, red-brown circular spot above this carina, at 

 the base of the fingers; the fifth carina is along the lower mar- 

 gin and continues to the tip of the lower finger. The fingers are 

 subequal, long, slender, with triangular teeth ; the acuminate apex 

 of the lower finger extends beyond that of the upper one. The 

 upper finger has three longitudinal carinae, the lower finger, two 

 carinae, on their respective outer surfaces. 



The second, third and fourth pairs of legs are slender, devoid 

 of spines, decreasing in length in the order named. The fifth pair 

 of legs are natatory, devoid of spines. 



References: Neptunits tubercidosics, Milne Edwards, A., Ar- 

 chiv. du Mus. Paris, 1861, t. X, pp. 333, 339, pi. 31, fig. 5 

 (mislabeled N. rugostts). — Miers, E. J., Rept. H. M. S. 

 "Challenger" Zool., 1886, vol. XVII, p. 176.— Henderson, 

 J. R., Trans. Linn. Soc. London, Zool., 1893, ser. 2, vol. V, 

 p. 369. — Alcock, a., Journ. Asiatic Soc. Bengal, 1899, vol. 

 LXVIII, pt. II, Nat. Hist, No. 1, p. 42. 



