1866.] MR. F. P. PASCOE ON THE COLEOPTERA OF PENANG. 265 



elytra much broader than the prothorax at the base, longer by 7 to 

 2 than the head and prothorax together, coarsely punctured, the 

 intermediate carina strongly marked, the apices obliquely truncate, 

 not mucronate at the angles ; antennae shorter than the body, the 

 third joint much longer than the fourth, the basal joint red, the re- 

 mainder black. Length 9 lines. 



Description from a Sumatran specimen. 



OBEREA CLARA. 



O. fulvo-testacea ; ehjtris pube albescente velutina indutis, late- 

 ribus infuscatis ; antennis nigris. 



Fulvous testaceous, inclining to pale luteous on the head and pro- 

 thorax, the elytra covered with a whitish velvety pubescence ; head 

 and prothorax finely punctured, the latter rather narrower and longer 

 than the head ; scutellum scutiform ; elytra seriate-punctate, the 

 external margin and apex brownish ; body beneath and legs pale 

 luteous, the posterior tarsi sometimes brownish ; antennae black, 

 shorter than the body, the third joint the longest. Length 7-9 lines. 



I have specimens from Mr. Wallace, taken at Singapore. 



Oberea tenuata. 



0. angnstata, subfidiginosa ; capite prothoraceque rujis ; elytris 

 pube albescente velutina indutis. 



Narrow and nearly linear throughout, pale fuliginous, with the 

 head and prothorax rufous, the elytra dull reddish brown as to the 

 derm ; but, viewed through the velvety whitish pubescence, they 

 appear of a dark-greyish or smoky colour ; head rather finely punc- 

 tured, broader than the prothorax, the latter much longer than 

 broad, with a yellowish pubescence and minute scattered punctures ; 

 scutellum oblong, dark brown ; elytra seriate-punctate, darker at 

 the apex ; body beneath, except the antepectus, and legs blackish, 

 with a greyish-white pubescence ; antennae black, the third joint 

 shorter than the fourth. Length 6 lines. 



Described from a specimen taken in Sarawak. It seems to me 

 that Mr. Newman's genus Isosceles has not the slightest claim to 

 be preserved. Why he separated it from Oberea* does not appear. 

 M. James Thomson, who has adopted it, relies chiefly on the an- 

 tenna? " corpore multum longiores ;" but Mr. Newman expressly 

 says of his genus that they are " corpore plerumque breviores." 

 Oberea is a very extensive group, but with species often varying 

 according to the individual, and therefore very difficult to determine 

 satisfactorily. The three species described above are, however, un- 

 usually well marked. 



* In my ' Longicornia Malayana ' I have proposed to separate Oberea and its 

 allies from the subfamily Phytwciina ; I fear, however, that the characters on 

 which I relied are more than usually questions of degree, too numerous and gra- 

 duated to lead to anything satisfactory in adopting them. 



Proc. Zool. Soc— 1866, No. XVIII. 



