No. i.] E.P. S'tebhing — On the Bostrtchidae of the Indian Region, if 



2— Hanches anterieures separees par un lobe prost.ernal. Inter- 

 maxilhiire bien developpe. Eperons terminaux internes des 

 tibias anterieurs ties dissemblables, le plus grand fortement 

 recourbe en arriere, le plus petit droit ou absent. Colora- 

 tion brune . . • Tribu Polycaonins. 

 3— -Tarses plus courts que les tibias; onychium 1 aussi long ou< 

 plus long que )es articles precedents reunis. Hanches 

 anteneures moins saillantes et nettement transverse. Pro- 

 notum regulerement convexe, arrondi au boid anterieur 

 les denticules medians etant les plus developpes. Vertex 

 lisse on finement ponctue . . Tribu Dinoderinse- 

 3*,—»Tarses aussi longs ou plus longs que les tibias; onychium 

 plus court que les articles precedents reunis. 3 Hanches 

 anterieures elevees, saillantes, subglobuleuses ou sub- 

 connoides et non transverses. Pronotum fortement gibbeux, 

 tronque ou echancre au bord anterieur, les denticules 

 Iateraux etant plus dcvHoppes que les medians. 8 Vertex: 

 couvert de petits granules ou de ties fines cotes longi- 

 tudinales « • . * . Tribu Bostrichinae,. 



BOSTRICHID^ PROCEPHAUE. 

 The Tribe Psoinse is at present unreported from India. 



Tribe POLYCAONIN/E, 



The tribe Polycaoninoe consists of two genera — Polycaon and* 

 Heterarthron — of which the former is as yet unreported from India,. 



Genus Heterarthron. 



Gue'nn, 1SS4, Icon, da Regn. Anim. Ins., p. 186. 



Exooioides Gucrin, 18^4, 1-c, p- 187.— Id., 1845, Ann. Fr., Bull., p. XVIF 



(sub E:.opsoii!es). 

 Polyaon aucr. 



Body cylindrical. Anterior legs very robust, their tibiae strongly- 

 indented on the inner sides at their bases and armed with a single 

 minor terminal spur. Joinis two and three of the tarsus prolonged 

 on their inner lower edge.^, the joint below being inserted in the 



1 This is the name given by Mr. Le?ne to the last tarsal joint. 



1 These characters of the tarsal joints of the Bostrichina are not absolutely 

 constant. 



3 Bostrichus elongatus, Lesne, is the only one whose pronotum does n:>t 

 show these characters. 



C 



