350 Mr, G. J. Arrow on a Contrihution to the 



^ . The body is very robust and convex. The head is 

 triangular and sparingly punctured and carries a long 

 strongly recurved horn, the posterior face of which is 

 flattened and slightly excavated. Tlie pronotuin is 

 minutely and sparsely punctured, strongly curved at the 

 sides, with the front angles prominent and acute. The 

 prothorax, except at the posterior and lateral borders, is 

 retuse, nearly flat, and very shining, with some large 

 punctures before and behind the posterior margin of the 

 flattened part. This margin is slightly interrupted and 

 depressed in the middle and elevated at each side into a 

 more or less sharp tooth. The scutelhim is rugose, short 

 and very bluntly angulated. The elytra have a minute 

 scattered puncturation and a single line of larger punctures 

 upon each side of the suture. The apical margins are 

 more thickly, and the pygidium and prop^^gidium strongly 

 and closely punctured. 



$. A little narrower and less convex. The head is very 

 coarsely and rugosely punctured and armed with a sHght 

 tubercle. The prothorax is coarsely punctured, the 

 punctures being distinct behind and confluent and rugose 

 in front, and the front angles are less prominent than in 

 the male. The scutellum is rather more pointed and the 

 elytra a little longer. 



The male has the appearance of a stout and broad 

 Oryctes, while the female greatly resembles that of a 

 TricJiogomplius, but the structure of the hind tarsi, the 

 maxillae, the horn of the male, etc., show it to have a truer 

 relationship with the Ckalcosoma group, although the 

 absence of any elongation of the legs of the male forms an 

 important distinction from Ckalcosoma, UujmtoruS) etc. 



Two species of Etcpatorus are enumerated in the Munich 

 Catalogue, but they are in reality only colour varieties of 

 a single species E. Hardunchci, Hope. The elytra of this 

 vary in colour from light mahogany to black, but the outer 

 margin nearly always remains pale, and the variety which 

 is entirely black except this pale elytral border constitutes 

 the var. Cantori. Another species occurs in Burma, Siam 

 and Tonkin and appears to be still undescribed. Herr 

 Nonfried has described a specimen from Kashmir by the 

 name of Euixdorus Atkinsoni, but the chief difference 

 which he finds between it and E. Hardwichei is in the 

 greater breadth of the part which he calls in his Latin 

 diagnosis the quadridentate labrum and later on the galea, 



