188 LUCANID^. 



produced behind the coxae as a shar])-pomted cone, directed 

 vertically downwards in the male and backwards in the female. 



$. Oval in shape. The head is short and broad, opacjue and 

 unevenly punctured, the canthus strongly and bluntly pro- 

 duced outward on each side. The pronotum is lightly punc- 

 tured, densely granular and very opacjue at the sides, the front 

 angle is broadly rounded, the lateral mai'gin gently curved to 

 the lateral angle, which is acute but not spiniform, and strongly 

 sinuate to the acute hind angle. The abdomen is shining and 

 gather sparingly punctured. 



(J. The head is finely and densely granular, its sides oblique 

 in front of the eyes and forming an acute but not long process 

 behind them. The pronotu m also is finely and densely granular, 

 entirely opacjue and sooty at the sides. The front angles are a 

 little produced and the lateral angle forms a sharj) spine. The 

 abdomen is dull and not distinctly punctured. The front tibia 

 is slender and armed with tlu-ee or four sharp lateral sphies. 



Variation of the male. — Inconstant phase. In small males 

 the head is strongly excised in front, the mandibles are very 

 irregularly serrate at the inner edge and the right one is much 

 broader than the left. In specimens of medium size the man- 

 dibles remain dissimilar, but two or three strong teeth only 

 remain before the terminal part. In large specimens the 

 mandibles, although more slender, are asymmetrical, the large 

 teeth being alternate. 



Constant phase. The mandibles are about twice the length 

 of the head, slender and synnnetrical. They are gently dilated 

 at the base, and the dilated part is produced into a short, sharp, 

 oblique tooth. Beyond the middle there is a strong bifurcated 

 branch and the tip is forked. The front edge of the head is 

 strongly carinate and almost straight. 



^. Length (with mandibles), 44-79 mm. ; (witliout man- 

 dibles) 39-54 mm. : breadth, 19-26 mm. 



$. Length, 32-45 mm. ; breadth, 15-26 mm. 



Burma : Loimwe, S. Shan States, 5600 ft. {J. P. Dniuimond, 

 'Oct.). China : Hongkong ; Canton. 



Type in the Hope Department, Oxford University Museum. 



101. Calcodes versicolor. (Plate XX, figs. 4, 5.) 



Neolucanus versicolor Did.,* Col. Luc. du Globe, 1931, p. 228. 



Black, with the elytra bright yellow, their outer edges very 

 narrowly and the basal and external edges less narrowly 

 black. Not very convex ; the ui)per surftice not shining, 

 exce])t near the elytral suture, the outer margins of the elytra 

 not distinctly flattened but well rounded. 



$. The elytra are decorated witli a moderately broad black 

 sutural stripe, a little dilated at the base and slightly narrowed 



