530 MR. F. P. PASCOE ON THE COLEOPTERA OF PENANG. [Nov. 22, 



Glossy brown, with an irregular or interrupted greyish silky pu- 

 bescence ; head with scattered greyish hairs, more condensed around 

 the eyes, which are nearly approximate abore ; antennae with the 

 third joint longer than the fourth, which is equal in length to the 

 fifth ; prothorax strongly rounded at the sides, the anterior border 

 narrower than the posterior, the disk grooved transversely, the 

 grooves slightly undulating ; scutellum semicircular ; elytra impunc- 

 tate, the hairs forming the pubescence oblique or occasionally trans- 

 verse, and sufficiently condensed in parts to assume the appearance 

 of stripes ; body beneath and legs reddish ferruginous, the antennae 

 dark, all with a rather close greyish pile. Length 10 lines. 



A female specimen of another species, differing slightly from the 

 genus, is in the collection. 



Cyriopalus. 



Antennae \2-articulatce, pectinatte. 



Prothorax muticus, corrugatus. 



Pedes breviusculi ; femora haud incrassata. 



Head exserted, narrower than the prothorax. Eyes large, strongly 

 emarginate, the facets small. Antennae twelve-jointed ; the scape 

 short, triquetrous ; the second joint abbreviated ; the third nearly as 

 long as the scape, furnished like the rest, except the last, with a 

 long subulate spine at the apex ; fourth and fifth joints rather longer, 

 the sixth to the eleventh gradually increasing in length ; the twelfth 

 simply subulate. Prothorax shortly subovate, corrugated, the sides 

 unarmed. Elytra depressed, subparallel. Legs rather short, nearly 

 equal, except that the anterior pair is the shortest ; femora not 

 thickened. Pro- and meso-sterna simple. 



The remarkable character of the twelve-jointed antennae will at 

 once distinguish this genus. Mr. Lamb has only a single specimen ; 

 and this is also the case with Mr. Wallace, who took it at Sarawak. 

 Without dissection there is nothing to suggest the sex, but there is 

 a breadth in the outline of both that looks feminine. In the event 

 of a second species being discovered, it is probable that the compa- 

 rative lengths of the antennal joints may be found to be somewhat 

 different. In both specimens there is a short strong tooth on the 

 lower margins of the intermediate and posterior femora, that seems 

 pinched out so as to leave a corresponding cavity in the site it would 

 have occupied had the femora been entire, and this cavity is filled 

 with a pale dense pubescence. 



Cyriopalus wallacei. (PI. XLII. fig. 3.) 



Cfuscescens, pube grisea subtilissima dense tectus. 



Brownish, everywhere covered with a very delicate greyish pu- 

 bescence ; head impunctate, deeply grooved on the vertex; eyes, 

 mandibles, and scape dark brown; prothorax rather longer than 

 broad, narrowest at the apex, transversely and irregularly corrugated ; 

 scutellum triangular ; elytra much broader at the base than the pro- 

 thorax, impunctate, their apices emarginate, the angles strongly 



