NORTH AMERICAN BUPRESTID BEETLES 323 



numerous large punctures intermixed, becoming longitudinally 

 rugose on the occiput, and rather densely clothed on lower half with 

 moderately long, recumbent, whitish pubescence; epistoma strongly 

 transverse between the antennae and broadly, deeply, arcuately 

 emarginate in front; antennae extending to middle of pronotum, 

 serrate from the fifth joint, and the outer joints vaguely longer than 

 wide ; eyes large, broadly elongate and more acutely rounded beneath 

 than above. 



Pronotum one-third wider than long, slightly narrower at base 

 than at apex, and widest near middle; sides nearly parallel, or 

 feebly, arcuately rounded to near basal fourth, than rather strongly 

 narrowed to the posterior angles, which are rectangular; when 

 viewed from the side the marginal carina is strongly sinuate, the 

 submarginal carina feebly sinuate, the two carinae narrowly sepa- 

 rated anteriorly, and connected to each other at basal fourth; ante- 

 rior margin strongly sinuate, with a broadly rounded median lobe; 

 base transversely sinuate, with the median lobe feebly developed, and 

 arcuately or subangularly emarginate in front of scutellum; disk 

 moderately convex, with two feeble, round depressions placed lon- 

 gitudinally at the middle, of which the posterior one is the deepest, 

 a large, deep depression on each side along lateral margin, and 

 with strongly elevated, straight, prehumeral carinae, extending 

 from base to the middle; surface rather coarsely, transversely ru- 

 gose, finely, densely granulose, and finely, densely punctate between 

 the rugae. Scutellum transversely carinate, and the surface finely, 

 densely reticulate. 



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

 at base and behind middle; sides parallel for a short distance be- 

 hind base, broadly, vaguely constricted near middle, feebly, arcu- 

 ately expanded behind middle, then obliquely narrowed to the tips, 

 which are separately, rather narrowly rounded, and coarsely ser- 

 rulate; sides of abdomen scarcely visible from above; disk feebly, 

 longitudinally depressed along the sutural margins, which are ele- 

 vated posteriorly, and with broad, shallow basal depressions; sur- 

 face rather coarsely, imbricate-punctate, and sparsely, uniformly 

 clothed with short, inconspicuous, whitish hairs. 



Abdomen beneath rather densely, finely punctate, becoming more 

 or less irregularly striolate toward the sides of basal segments, and 

 sparsely, uniformly clothed with short, recumbent, whitish pubes- 

 cence; first and second segments flattened (the first feebly concave), 

 and the median part more densely clothed with longer hairs; verti- 

 cal portions of the segments slightly more densely pubescent than 

 ventral surface; pygidium not distinctly carinate at middle. Pro- 

 sternum rather coarsely, sparsely granulose, and rather densely 



