352 Mr. G. J. Arrow on a Contribution to the 



and the anterior thoracic horns generally diverge con- 

 siderably but sometimes slightly converge. In small 

 specimens the dorsal liorns may completely disappear. 



I have seen a considerable number of examples, most of 

 them males. 



Eupatorus hinnanicus. 



ConvexiTS, sat longe ovatns, piceus, opacus, coriaceus, corjiore 

 subtus parcissime rufo-hirto : 



^ , clypeo acute bidentato, cornu gracili acuto, fortiter leciuvato, 

 armato ; protlioracc vix piinctato, latcribiis paruiu arcuatis, postice 

 fere parallelis, antice valde ai)proximatis, angulis anticis acutis, 

 iitrinijue pone angulos auticos acute productis cornubusque duobus 

 dorsalibus ante marginem posticam .spatulifurniibus approximatis 

 retro directis, pedum anticorum femoribus vix dentatis, tibiis paulo 

 elongatis, dentibus acutis transversis denteque infero verticali, tarsis 

 vix elongatis. 



Long. 45-48 nun. Lat. max. 25 mm. 



Hall. Burma : Moulmein, Mergui. 



♦ 



The colour is a very dark chestnut, approaching black, 

 and the form convex and moderately elongate. The upper 

 surface is coriaceous and scarcely shining, the scutellum 

 and elytra quite opaque and the pygidium and propygi- 

 dium finely rugose and minutely setose. The lower surface 

 is very scantily furnished with tawny hairs. 



$. The head is bidentate in front aud bears a long slender 

 and sharply-pointed horn, strongly curving backwards in 

 the basal half and afterwards almost straight. The 

 prothorax is about as long as it is broad, with the sides 

 nearly parallel behind and strongly tapering in front, the 

 margins produced into a sharp point on each side just 

 behind the front angle and the dorsal part bearing a pair 

 of spatulate horns placed close together behind the middle. 

 These are convex on their posterior face and concave on the 

 anterior, they slope backwards and their tips almost meet. 

 The legs are not long, but the i'ront tibiae are slightly 

 elongate and bear three juearly c(pial acute teeth set at 

 right angles and a vertical tooth on the lower surfiice at 

 the cxtremit}^ The front femur has an irregularly rounded 

 laminar projection near the middle of the anterior 

 margin. 



A second t specimen of low development shows the 



