568 STUDIES IN AUSTRALIAN ENTOMOLOGY, NO. IX., 



CH. renardi, Chaud. 



d. Elytra convex on disc, colour black < H. xngorsi, <'Ory. 



(,ff- a/ternans, SI. 

 dd. Elytra and prothorax flat on disc, very 

 wide at bases and with margins 



greenish H. aiufulosum, Chaud. 



CC. Mentuni with median tooth excised at 

 apex ; prothorax cordate, posterior 

 marginal puncture on each side c(m- 

 siderabl^ before the base; prosternum 

 and mesosternum glabrous. 

 D. Prothorax sinuate on each side near 

 base, posterior angles rectangular or 

 subrectangular (except in H. jior- 

 phyriacum, SI.) 

 E. Head long, gen£e rounded to base 

 of mandibles on each side. 

 /. Posterior femora long, slender; 

 anterior angles of liiolli aax 

 near to sides of head. 

 ;/. Form elongate; prothorax gen- 

 tly narrowed to base; elytra 

 Ii^ng, subparallel on sides; $ 

 with apex of abdomen pluri- 



setose H. cyaneum, Casteln. 



fjij. Prothorax strongly sinuate- 

 angustate to base ; elytra 

 obovate, sides strongly 

 rounded ; J with apex of 



abdomen 4-setose H. viridescem, Casteln. 



//". Posterior femora swollen in 

 middle; prothorax with anterior 

 angles wide and distant irom 

 sides of head; elytra with third, 

 fifth and seventh interstices 

 carinate. 



h. Elytra with ninth interstice 

 merged with marginal chan- 

 nel; posterior cox* wide at 



outer posterior angle //. 'n7.sojn', Casteln. 



JiJi. Elytra with ninth interstice 

 raifed posteriorly ; pos- 

 terior cox;e with outer pos- 

 terior angle prominent and 

 triangular H. nitidkoJle, Casteln. 



