224 CERAMBYCLDJE. 



widened again posteriorly, each obtusely rounded at the apex. 

 Femora finely and very sparsely punctulate, the clavate portion 

 almost impunctate in the middle. First joint of the hind tarsi 

 slightly longer than the second and third united. 



Length 16 ; breadth 4 mm. 



Hab. Pegu. 



Group PYRESTINL 



Antennal supports emarginate in front, more or less distinctly 

 raised on the inner side ; front subvertical ; palpi rather short, 

 subequal in length ; eyes finely facetted, deeply emarginate, in one 

 genus completely divided ; gula with short mentigerous process. 

 Antennae more or less robust, usually shorter than the body in 

 both sexes. Pro thorax unarmed at the sides. Legs short ; hind 

 femora not reaching to the apex of the elytra ; first joint of hind 

 tarsi shorter than the second and third united. Front coxa) glo- 

 bular, their acetabula rounded on the outer side, closed posteriorly. 

 Acetabula of middle coxa? open to the epimera. Metathorax 

 without scent-pores. Wing-vein Cu 1 simple, Cu 2 absent. 



The genera of this group are, with one exception, restricted in 

 their distribution to the Oriental Region and North China. The 

 species are characterised, to a greater or less extent, by their red 

 coloration. 



Synopsis of the Genera. 



A. Eyes completely divided PACHYLOCERUS, p. 224. 



B. Eyes emarginate. 



a. Lateral margins of elytra more or less 



deeply sinuate near base PYRESTES, p. 227. 



b. Lateral margins of elytra straight ERYTHRUS, p. 229. 



Genus PACHYLOCERUS. 



Pachylccerus, Hope, Trans. Ent. Soc. i, p. 19 (1834) ; Lacord. Gen. 

 Coleopt. viii, p. 519 (1869). 



Type, P. corallimis, Hope. 



JSange. India, Ceylon, Burma, Sumatra and Java. 



Head sulcate, narrowly concave between the antennal supports, 

 the latter somewhat prominent, deeply emarginate in front ; vertex 

 marked with a median groove ; clypeo-frontal sutures distinct ; 

 the clypeus slightly depressed in the middle, with a slightly raised 

 area at its upper end ; labrum short, broad ; eyes completely 

 divided, the two lobes of each rather widely separated. Antenna? 

 short, thick ; first joint stout, slightly thickened towards the apex, 

 third, fourth and fifth subglobose or obconical, sixth to tenth 

 compressed in front and acutely angxilate at the apex, eleventh 

 compressed, scarcely longer than the tenth. Prothorax strongly 

 rugose, more or less rounded at the sides, narrowed in front, less 

 so at the base. Elytra rather short, convex, rounded at apex, 



