tlie Coleopterous Genus Diphiicephala. 221 



equilateral triangle ; the central part is without the longitudinal 

 groove observable in D. Hopei, but in its place there is a broad, flat 

 portion, which is thickly punctured, and furnished very sparingly witli 

 decumbent hairs ; the remainder of this segment is impunctate, with- 

 out hair, and has a fovea towards each of the anterior angles. 



In the male the clypeus is not very deeply emarginate ; the thorax 

 is glossy, and distinctly punctured ; the apical segment of the abdo- 

 men flat, and furnished throughout with decumbent white hairs ; the 

 anterior tibiae are bidentate externally, and furnished v\'ith a distinct 

 tooth internally at the apex ; these processes are of a pitchy-red 

 colour : the hinder tibiae are furnished with a spinous process which 

 springs from the outer part and curves inwards and upwards. 



The specimens from which the description was originally drawn 

 Avere females, and were lent me by the Rev. F. W. Hope. Since 

 the reading of the paper I have examined many specimens of lioth 

 sexes, and compared them with the original specimen described by 

 Mr. MacLeay in the work above mentioned. 



Sp. 7. D. PULCHELLA (Ktr. MSS.). 



D. viridis : thorace punctato, dorso canaliculate ; foveis laterali- 

 bus magnis et profunde impressis : scutello fovea profunde 

 excavata : elytris confluenter punctatis : tibiis anticis biden- 

 tatis. 



Long. corp. 3^ lin. 



Obs. From either of the foregoing this species may be known by 

 its great glossiness, smaller size, the straight lateral margins of 

 the. elytra, and more narrowed thorax. The anterior part of the 

 head is very thickly and finely punctured ; the posterior 'portion is 

 glossy and distinctly punctured. Thorax glossy, distinctly punc- 

 tured, the dorsal channel rather broad and deep ; the anterior angles 

 acute ; lateral margins armed with a tooth or angular projection ; 

 the lateral fovese are large and rather deep ; the scutellum is im- 

 punctate and has a distinct fovea ; elytra thickly and rather coarsely 

 punctured. Body beneath sparingly furnished with white decum- 

 bent hairs ; anterior tibiae bidentate externally. 



In the collections of the Entomological Society and British 

 Museum. 



Sp. 8. D. PILISTRIATA. 



D. viridis, nitida ; subtus pilis albis decumbentibus tecta, supra 

 pilis albis ornata striis longitudinalibus supra elytra depositis : 

 thorace canali lato dorsali impresso, foveisque 2 lateralibus, 

 sparsim punctato : scutello laevi : pedibus testaceis : tibiis an- 

 ticis bidentatis. 



