CANCROIDEA. 237 



line of the front and antero-lateral margins together is very regularly 

 semicircular. The thickness of the larger hand is equal to half the 

 breadth of the carapax. The inner margin of the hand and carpus is 

 very regularly set with a range of longish hairs. The under surface 

 of the larger hand is granulous (or tuberculous), but not hirsute. 

 The female specimen has eggs under the abdomen. 



PlLUMNUS LEVIMANUS. 



Carapax convexiusculus, non areolatus, antich vix Icevis, f route emargir- 

 nato; margine antero-laterali 3-dentato angulo orbitw externo vix pro- 

 minente excluso, dentibus minutis, non acutis. Pedes antici valde 

 i?icequi, carpo obsolete tuber cidato, rnanu major e crassd, nudd, lo3vi 7 

 extus non costatd, minore hirsutd et ininutd tuberculatd. Pedes 8 pos~ 

 tici partim hirsuti. 



Carapax somewhat convex, not areolate, hardly smooth anteriorly ; 

 front emarginate; antero-lateral margin three-toothed, teeth minute, 

 not acute, outer angle of orbit but very slightly prominent. Ante- 

 rior feet very unequal, carpus faint tuberculate, larger hand stout, 

 naked, smooth, not costate without, smaller hand hirsute and 

 minute tuberculate. Eight posterior feet in part hirsute. 



Plate 13, fig. 11 a, male, enlarged three diameters; b, large hand, 

 enlarged three and a half diameters. 



Balabac Passage, north of Borneo. 



Length of carapax of a male, 3 lines ; greatest breadth, 3*9 lines ; 

 ratio of length to breadth, 1:1-3. The carapax is not quite smooth 

 towards the front on the antero-lateral region, and seems to be very 

 slightly pubescent in these parts. The large hand is rounded above 

 and quite smooth, with some faint traces of minute tubercles towards 

 the base. The eight posterior legs are rather slender, with the mar- 

 gins regular, and in part hirsute. The tarsus is but slightly hairy, 



and is nearly cylindrical. 



60 



