1866.] MR. F. P. PASCOE ON THE COLEOPTERA OF PENANG. 525 



ridge, the apex nearly rounded or very slightly truncate, two white 

 bands, the anterior interrupted at the suture and declivous portion, 

 and placed midway between the base and posterior band, the latter 

 continuous or nearly so, and much nearer to the anterior band than 

 to the apex ; abdomen sometimes entirely black ; antennae with the 

 last six joints reddish yellow. Length 6-7 lines. 



EURYARTHRUM EGENUM. 



E. atrum ; elytris bifasciatis, basi paulo planatis, haud declivis, 

 apice rotundatis ; ant. art. ult. quinque vel sex rufo-ochraceis. 



Black, with a narrow mesial line between the eyes, and a circular 

 impression beneath them ; prothorax slightly produced at the sides, 

 margined with white posteriorly ; scutellum small, triangular ; elytra 

 depressed at the base, very slightly flattened, not declivous at the 

 sides, the apex rounded, two white bands, the anterior interrupted 

 at the suture and side, the posterior continuous, the first a little 

 nearer the base than the second is to the apex ; antennae from the 

 apex of the sixth or seventh joints reddish yellow. Length 6 lines. 



EURYARTHRUM ATRIPENNE. 



E. supra totum atrum, margine postico prothoracis excepto; elytris 

 planatis, apice oblique truncatis ; ant. art. ult. sex rufo-ochra- 

 ceis. 



Black, with a deeply impressed mesial line between the eyes and a 

 circular impression beneath them ; prothorax somewhat oblong, the 

 sides nearly round, the posterior margin edged with white ; scu- 

 tellum small, subtriangular ; elytra entirely black, flattened, the 

 sides doubly declivous (forming two lines), the apex obliquely trun- 

 cate ; antennae with the last six joints reddish yellow. Length 

 6 lines. 



ASMEDIA. 



Antennae apicem versus crassiores, articulis haud planatis. 

 Prothorax lateraliter angulatus. 

 Prosternum haud productum. 



Head elongate, rather concave below the eyes ; mandibles pro- 

 duced. Eyes large, lateral, narrowly emarginate. Antennae shorter 

 than the body, moderately distant at the base ; the scape short, ob- 

 conic ; the third joint longest ; the remainder gradually thicker to 

 the eighth, not flattened or produced at the apex. Prothorax short, 

 broader than the head ; the sides angulated. Elytra narrow ; the 

 sides gradually receding to the apex. Legs unequal ; the posterior 

 pair elongate. Anterior coxae globose ; their acetabula narrowly 

 angulated. Prosternum not produced. Mesosternum simple. 



The species on which this genus is founded bears an extraordinary 

 resemblance to Euryarthrum, but its antennae are those of Pachy- 

 teria, two genera certainly very different in general appearance, 

 notwithstanding many characters in common ; and, the latter being 

 closely related to Callichroma, we might be led to regard all these 



