tlie Coleopterous Genus Diphucephala. 219 



Sp. 3. D. HoPEi. 



D. viridis, subtus pilis albis decumbentibus : capite confluenter 

 punctato : thorace obscure viridi, sub lente punctulatissimo, 

 dorso subcanaliculato : elytris nitidis, subseriatim punctatis, 

 lineis duabus longitudinalibus elevatiusculis : tarsis cyaneis ; 

 tibiis anticis inermibus. 



Long. Corp. 4 — 5 lin, 



Obs. In this species the thorax is dull in the male, being finely 

 shagreened : in the female it is slightly glossy, and punctured ; the 

 lateral margins are slightly pubescent ; the scutellum is impunctate, 

 and impressed with a fovea in the middle. The anterior tibiae are 

 without the usual tooth near the apex, and the basal joint of the 

 anterior tarsus in the female is armed beneath with two spines ; the 

 terminal segment of the abdomen is thickly punctured, slightly con- 

 vex, and covered with decumbent yellowish hairs ; in the female 

 this part is impressed with an impunctate longitudinal fovea in the 

 middle, which part is destitute of hairs. 



The Rev. F. W. Hope received many specimens of this insect from 

 the Swan River, which he lent me for examination. Some he has 

 deposited in the collection of the Entomological Society. I have 

 named the species after this gentleman, in testimony of the many 

 kindnesses I have received from him. 



Sp. 4. D. AFFINIS. 



D. viridis, nitida, subtus pilis albis decumbentibus : thorace 

 punctulatissimo, dorso subcanaliculato : elytris subseriatim 

 punctatis : tarsis cyaneis ; tibiis anticis sub-bidentatis. 



Long. Corp. 4 — 4| lin. 



Obs. D. affinis is rather more brilliant in colour than its imme- 

 diate allies. The body is of an uniform bright green above ; the head 

 and thorax of the male are a little less glossy than the elytra ; the 

 clypeus is deeply emarginate ; the head is slightly rugose ; scutellum 

 smooth and triangular. The thorax of the female is distinctly punc- 

 tured ; the puncturing on the thorax of the male is much less di- 

 stinct. The terminal segment of the abdomen is somewhat triangular, 

 very sparingly furnished with minute decumbent hairs, and alike in 

 both sexes, excepting that in the female it is rather shorter than in 

 the other sex. The anterior tibia (which is bidentate externally) 

 has the outer part produced at the apex ; this portion is not pointed 

 (as in most of the species of this genus), but truncated. The males 

 are furnished with a tooth-like process internally at the apex. 



In the collection of J. G. Children, Esq. 



