NORTH AMERICAN BUPRESTID BEETLES 203 



Head with the front narrow, strongly convex, slightly wider at 

 bottom than at top, the lateral margins feebly narrowed from bottom 

 to vertex, and with a feeble, narrow groove extending from the occi- 

 put to near middle of front ; surface irregularly, transversely rugose 

 in front, longitudinally rugose on the occiput, feebly, sparsely punc- 

 tate between the rugae, and clothed with a few, rather indistinct, 

 white hairs behind the epistoma; epistoma slightly transverse be- 

 tween the antennae, and feebly, broadly, arcuately emarginate in 

 front ; antennae extending to middle of pronotum, serrate from the 

 fourth joint, and the outer joints about as wide as long; eyes rather 

 small, narrowly oblong, broadly rounded above, and acutely angu- 

 lated beneath. 



Pronotum one-third wider than long, base and apex about equal in 

 width, and widest at middle ; sides regularly, arcuately rounded from 

 base to apical angles; when viewed from the side the marginal and 

 submarginal carinae are nearly straight, widely separated anteriorly, 

 and connected to each other near the base; anterior margin strongly 

 sinuate, with the median lobe broadly rounded; base nearly trans- 

 versely truncate, with the median lobe scarcely indicated; disk moder- 

 ately convex, feebly, narrowly concave along the sides, and without 

 median depressions or prehumeral carinae ; surface obsoletely granu- 

 lose, feebly, obliquely rugose at middle, longitudinally rugose toward 

 the sides, with a few fine punctures between the rugae, and clothed 

 with short, recumbent, whitish hairs, which are sparsely, regularly 

 placed on disk, but slightly longer and denser along the lateral 

 margins. Scutellum strongly, transversely carinate, and the surface 

 finely granulose or recticulate. 



Elytra slightly wider than pronotum at base, and about equal in 

 width at base and behind the middle; sides parallel for a short dis- 

 tance behind base, feebly, broadly constricted in front of middle, 

 broadly, arcuately expanded behind the middle, then obliquely nar- 

 rowed to the tips, which are separately, rather broadly, obliquely 

 rounded, and finely serrulate; sides of abdomen narrowly exposed 

 above; disk feebly flattened, without costa, and Avith broad, shallow 

 basal depressions; surface feebly, coarsely imbricate-punctate, and 

 each elytron ornamented with silvery white pubescent designs as 

 follows; a rather broad arcuate fascia extending from basal depres- 

 sion inward to the sutural margin, then outward to the lateral margin 

 near middle, and nearly the entire apical half pubescent, with the 

 anterior margin of pubescent area extending feebly, obliquely back- 

 ward from the suture near middle to the lateral margin. 



Abdomen beneath obsoletely granulose, sparsely punctate, the punc- 

 tures connected transversely by more or less distinct sinuate lines 

 toward the sides, sparsely clothed with short, recumbent, whitish 



2305—28 14 



