246 Mr R. I. Pocock on the Species of 



smoother interocular area and shorter carapace as compared 

 with the uppersurface of the hand and with the first and second 

 and fifth caudal segments, the relative length between these 

 parts being about the same in pugnax as in glabrifrons, in 

 having all the abdominal sterna thickly and uniformly 

 granular, and the inferior median keels quite obsolete on the 

 first caudal segment, instead of coarsely granular as in pugnax. 

 From prcedo, which is unknown to me, breviceps seems to 

 differ in much the same way that it does from pugnax, though 

 possibly approaching it more nearly in the granulation of the 

 hands. 



Synopsis of the Species contained in the Collection of the 

 British Museum. 



a. Carapace furnished in front with a small but 



distinct triangular area, defined by two 

 grooves which run obliquely inwards and 

 backwards from the anterior edge and meet 

 in a point in the middle line. 

 a 1 . Ocular tubercle only a little behind the 

 middle of the carapace; interocular area 

 not granular ; lower surface of abdomen 

 wrinkled in the male, but not grannlar . . carinatus, Pet. 

 ft 1 . Ocular tubercle far behind the middle of the 

 carapace. 

 a'-. Interocular area of carapace, lower sur- 

 face of abdomen and of tail smooth, not 



granular palli[di]i>cs, C. Koch. 



b'\ Interocular area distinctly granular ; 

 sterna also granular (the last only very 

 feebly so in § of granifrons) . 

 a 3 . Hand more convex and coarsely gran- 

 ular; keel on upperside of brachium 

 and finger-keel of hand coarsely 

 granular ; last abdominal sternum of 

 § nearly smooth, of <$ like the first 

 caudal segment below, and some of 

 the other sterna granular ; paler in 

 colour, crests on cheloe and carapace 

 not heavily blackened ; maxillary pro- 

 cesses of first and second legs slightly 



infuscate apically granifrons, sp. n. 



b 3 . Hand flatter and more finely granular ; 

 crest on brachium and hand strong, 

 but almost smooth ; fifth (and fourth 

 in part) stemite in $ thickly granular, 

 all of them in J usually granular, 

 principally behind ; crest on chela; and 

 maxillary processes of first and second 

 legs deeply black capensis (Herbst). 



b. Carapace not furnished with a distinct trian- 



