148 BOSTRICHID^. 



suhstriatus of our Britisli collections. As a matter of fact, we possess 

 three species under one name, and thetrv;e Dinoderus suhstriatus, Payk., 

 must be referred to a new genus, StephanopacJiys, which was proposed by- 

 Mr. C. O. Waterhouse (Ann. Mag. Nat. Hist. 1888, pp. 348-350) for 

 this insect. M. Lesne, who discusses these genera thorouglily in the 

 Ann. Soc. Ent. Franc. 1897, 318-350, remarks that almost all avithors 

 wrongly apply the name of Dinoderus to the species of the genus 

 Stephanojxochys, and that Mr. Waterhouse was the first to correct this 

 mistake and to establish the fact that the type species of the genus 

 Dinoderus was the Apate minuta of Fabricius, and not the Apate 

 suhstriata of Paykull, as Stephens had believed to be the ease. 

 The genera may be separated by the following characters : 



I. Front indistinct or markedly shorter than 



the clypeus; lateral suture of thorax 

 always well marked behind . . . dinoderus, Steph. 



T. Front at least as long as the clypeus ; 

 distinctly limited in front and behind ; 

 lateral suture of thorax wanting, or only 

 .-narked at the posterior angles . . stephanopachys, Wat. 



The following is Stephens' description of the genus Dinoderus (111. 

 Brit. iii. 352) : "Antenna? inserted in front, close to the eyes ; the basal 

 joint short, robust, the second subglobose, th*^ five following minute, 

 nodose, subcoarctate, the remainder forming an elongate, perfoliated club, 

 of which the two basal joints ave conic-trigonate, slightly produced 

 within, and the terminal one subglobose, compressed. Palpi short, 

 terminal joint minute, conic ; mandibles exserted, acute ; head short, 

 transverse, with the neck thick ; eyes globose, thorax short, rounded, very 

 gibbous, and rugose in front ; elytra setose posteriorly ; body elongate, 

 cylindric ; tibife compressed, denticulated externally ; tarsi short, simple." 



A fair number of species belong to this genus, the members of which 

 appear to be cosmopolitan, feeding on corn, bamboo, various imported 

 roots, &c. ; four are mentioned in the last European Catalogue ; we 

 possess two as British, which may be separated as follows : 



J. Central fovepe of the posterior ai^ea of the 

 thorax obsolete ; frontal region furnished 

 at the ends with upright, thick and rather 



long hairs . , . . . . D. ocellaris, Stepili. 



{pilifrons, Lesne.) 



II. Central fovese of the posterior area of the 

 thorax well marked ; upright hairs of the 

 frontal region usually shorter and not 



plentiful ; scutellum twice as broad as long D. minutus, F. 



{suhstriatus ? Steph.) 



D. ocellaris, Steph. (111. Brit. iii. 352 note); J), pilifrons, liesine 

 (Ann. Soc. Ent. Vv. 1897, 327). Of a reddish-brown coloui% with the 



