NORTH AMERICAN BUPRESTID BEETLES 65 



to middle of front, and with an obsolete depression on each side of the 

 front; surface vaguely reticulate, coarsely but not deeply rugose, 

 the rugae irregular on the front, but becoming more longitudinal on 

 the occiput, coarsely, irregularly punctate between the rugae, and 

 sparsely clothed with short, inconspicuous white hairs; epistoma 

 strongly transverse between the antennae, and rather deeply, arcu- 

 ately emarginate in front; antennae extending to middle of pro- 

 notum, serrate from the fourth joint, and the outer joints slightly 

 wider than long; eyes large, strongly elongate, and about equally 

 rounded above and beneath. 



Pronotum about two-fifths wider than long, about equal in width 

 at base and apex, and widest at middle; sides regularly, arcuately 

 rounded from apical angles to base; when viewed from the side the 

 marginal carina is rather strongly sinuate, the submarginal carina 

 nearly straight, the two carinae narrowly separated anteriorly, and 

 connected to each other near the base; anterior margin strongly 

 sinuate, and the median lobe broadly rounded; base rather deeply 

 emarginate at middle of each elytron, the median lobe broadly 

 rounded, and arcuately emarginate in front of scutellum; disk mod- 

 erately convex, broadly concave along base, the concavity extending 

 along lateral margins to near the apical angles, a broad, shallow, 

 median depression near anterior margin, and with sharply defined, 

 slightly arcuate, prehumeral carinae; surface coarsely, vaguely, 

 irregularly rugose, and finely, sparsely punctate between the rugae. 

 Scutellum feebly, transversely carinate, and the surface finely, 

 densely reticulate. 



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

 width at base and behind middle; sides nearly parallel for a short 

 distance behind base, broadly, arcuately constricted in front of mid- 

 dle, broadly, arcuately expanded behind the middle, then obliquely 

 narrowed to the tips which are separately, rather broadly rounded, 

 and densely serrulate; sides of abdomen narrowly exposed above; 

 disk vaguely flattened along sutural margins, which are slightly ele- 

 vated posteriorly, and with broad, moderately deep, basal depres- 

 sions; surface finely, densely imbricate-punctate. 



Abdomen beneath densely, obsoletely granulose, rather densely, 

 finely punctate, becoming more or less irregularly, transversely ru- 

 gose on basal segments, and sparsely, uniformly clothed with short, 

 recumbent, white pubescence; first segment convex at middle; verti- 

 cal portions of the segments not conspicuously pubescent; pygidium 

 coarsely, densely punctate, and feebly, longitudinally carinate at 

 middle, but the carina not projecting. Prosternum finely granulose, 

 sparsely punctate, somewhat rugose, and sparsely clothed with short 

 semierect, white hairs; prosternal lobe broad, moderately declivous, 



