90 



FAiMILY SCARABAEIDAE 



Xylotrupes. 

 Xylotrupes gideon, Linn. 



References. — Scambaeus gideon, Linn. Syst. Xat. 12th ed. i (2), 1767, p. 541 ; Burm. Handb. Ent. 



V, 1847, p. 266. 



Habitat. — Burma, Assam. 



Tree Attacked. — Poinciana ve^ia. Pyinmana, Upper Burma (C. B. 

 Smales). 



Fk;. 52. — Xylotrupes gideon, Linn. ^ (natural size) with outline 

 of female {a)^ and outlines of anterior part of males of maxi- 

 mum (/'), intermediate ((), and minimum {d) development. (After 

 Arrow in /-'. B I.) 



Beetle. -Shining black or brownish, massive, the elytra occasionally lighter-coloured ; 

 under-surface of pro- meso- and metathorax, especially the two latter, clothed with a long 

 dense yellowish pubescence. Abdomen and under-surface of two hind 

 Description. pairs of legs shining brown. $ easily distinguished by a long 



l)ifurcate horn projecting from the vertex of head, which curves 

 upwards and backwards towards a thick bifurcate horn on the prothorax, which curves down- 

 wards and \aries in length, at times being much longer than the one on the head. 



In the $ the horn on the head is longer than that on the prothorax, the latter being 

 sometimes a mere blunt knob. Length, 36 mm. to 50 mm. 



