144 PROCEEDINGS OF THE XATIOXAL MUSEUM. vol. 48. 



The tooth on the upper margin of themerus of the cheliped is strong. 

 The carpus is longer, measured from the articulation with the merus, 

 than it is in the opposite direction, inner tooth excluded. This tooth 

 is broad, thick, and blunt. 



The chelae are very unequal. On the upper surface of the manus 

 there is an elongate-oval area which is nearly smooth and shining; 

 viewed with a lens, it shows scattered granules, but presents an alto- 

 gether different appearance from the rest of the manus, which is 

 covered with crowded granules. The immovable finger is very wide 

 at the middle. The color on the .fingers is a light horn-color and 

 covers about two-thirds of their length. 



The ambulatory legs are not so long and slender as in C. longipes. 



Abdomen of male narrower than in that species. 



PSOPHETICUS HUGHI, new species. 



Type-locality. — Northern Mindanao: Macabalan Point Light, S. 31° 

 to 39° E., 6 to 7.7 miles; lat. 8° 35' SO" to 37' 15" N.; long. 124° 36'E.; 

 200-220 fathoms; gn.m.; August 5, 1909; station 5504-5505, Albatross; 

 one male. 



Type.— Cat. No. 46180, U.S.N.M. 



Dimensions. — Type male, length of carapace, 45.4 mm.; width 

 without spines, 56.2 mm.; width with spines, 60 mm.; width between 

 outer angles of orbit, 42.3 mm. 



Carapace narrow, four-fifths as long as broad, with the sides strongly 

 arched ; surface very convex from front to back, conspicuously though 

 irregularly punctate and pitted. The subtruncate front is slightly 

 more advanced at the rounded angles than elsewhere; there is a very 

 shallow sinus at the middle; the furrow above the edge is deep and 

 narrow. Upper margin of orbit very oblique, but not so strongly 

 sinuous as in P. stridulans; outer tooth broad, acute, directed obliquely 

 outward. Spine at lateral angle of carapace acuminate and pointing 

 strongly outward. 



Chelipeds long and massive. Merus with a strong, much curved 

 spine at middle of upper margin, three straight, slender spines on 

 lower margin, two subdistal spinules on the inner margin. Carpus 

 elongate, measured between the superior articulations with merus 

 and manus; a stout, pointed spine at outer angle, inner angle pro- 

 duced, subacute. The fingers of the larger cheliped gape widely in 

 their basal three-fifths, the distal two-fifths is strongly bent down. 



The merus joints of the ambulatory legs are armed with a single, 

 subdistal spine. 



The first segment of the male abdomen covers the sternum on either 

 side and is wider than the second or third segments. 



P. Tiughi differs from the species previously described in its narrow 

 and subcircular carapace; P. stridulans x is narrow but squarish, 



* Wood-Mason, Illus. Zool. Investigator, Crust., part 1, 1892, pi. 5, fig. 1. 



