172 lucanidA. 



$. The heml is iiarn^w, very coarsely, closely and roughly 

 punctured, the canthus very small and the front angles very 

 obtuse. The mandibles are laterally compressed and narrow, 

 strongly curved and bifurcate at the end, the tips sharp, the 

 lower one longer than the upper. The middle of the clypeal 

 process is slightly prominent. The pronolmn is shining, but 

 strongly and rather closely punctured, the punctures coarser 

 and more irregular at the sides. The front angles are blunt, 

 the sides nearly straight to beyond the middle, where they are 

 strongly but not acutely angulate, and nearly straight to the 

 hind angles, which are wt^l marked but obtuse. The elytra are 

 finely punctured, with wide opaque outer margins. The front 

 tibia is sharply tridentate at the end. 



(^. The hmd is flat and rather opaque above, the front margm 

 scarcely excised, the front angles stronglv produced outwards 

 and very sharp, the sides converging behind the eyes. The 

 upper surface bears fine scattered punctures. The outer lobes 

 of the clj^eal process are a little more prominent than the 

 median part. The mandibles are scarcely longer than the head, 

 strongly and regulai-ly rounded. The pronotuni is finely and 

 unevenly punctured, more strongly and closely near the base, 

 especially near its middle, and the sides are broadly opaque. 

 The front angles are blunt and not produced, the sides are 

 nearly straight to beyond the middle, where they are strongly 

 but not sharply angulate, and feebly concave to the well- 

 marked but not sharp hind angles. The elytra bear very 

 iri'cgular fine and scanty punctures. The front tibia bears a 

 few very sharp lateral teeth, the middle tibia lias a very minute 

 lateral spine and the hind tibia has none. 



Variation of the. male. In a small specimen the head is small, 

 the eyes are very prominent, the mandibles flat and rather 

 broad but well separated at the base, with the imier edges 

 irregularly toothed and the apices very sharp. In larger males 

 the mandibles are less flat and a little com])ressed and a strong 

 vertical tooth a])])cars upon the up})er edge before the tip. At 

 a moie advanced stage the liead is very broad, the eyes are less 

 })i'<)minent, the mandibles rather narrow and without teeth in 

 tlie basal half, veitically dilated in the terminal part, which is 

 divided into three nearly ccpial finger-like branches, with a. few 

 minute teeth between the middle and lower branches. 



^. Length (with mandibles), 16-26 mm.; (without man- 

 dibles) 15-21 mm. : breadth, 7-10 mm. 



$. Length, 18 nun. ; breadth, 8 mm. 



l)\RJEELiN(i DisTR. AssAM : Khasi Hills (Dr. Cantor). 



Type in tlie Hope Dept., Oxford University Museum. 



