NORTH AMERICAN BUPRESTID BEETLES 21 



tween the antennae, and broadly, deeply arcuately emarginate in 

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

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

 strongly elongate, and slightly more acutely rounded beneath than 

 above. 



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

 in width, and widest at middle ; sides arcuately rounded from apical 

 angles to near the base, where they are more obliquely narrowed; 

 when viewed from the side the marginal and submarginal carinae 

 are feebly sinuate, rather narrowly separated anteriorly, and con- 

 nected to each other at or near the base ; anterior margin feebly sinu- 

 ate, and the median lobe feebly, broadly rounded; base broadly, 

 arcuately emarginate at middle of each elytron, the median lobe 

 broadly rounded, and subtruncate in front of scutellum; disk 

 moderately convex, with a broad, shallow median depression, which 

 is more or less divided at the middle, a broad shallow depression 

 on each side along lateral margin, and with sharply defined, arcuate 

 prehumeral carinae; surface with numerous coarse, transverse punc- 

 tures, the punctures irregularly placed, and rather widely separated 

 on the disk, and clothed with a few short, inconspicuous hairs toward 

 the sides. Scutellum not transversely carinate, but the surface trian- 

 gularly depressed. 



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, feebly narrowed to behind middle, where they 

 are feebly, broadly expanded, then obliquely narrowed to the tips, 

 which are separately, very acutely angulated, slightly prolonged, and 

 coarsely serrulate ; sides of abdomen broadly exposed above ; disk 

 slightly flattened, a vague, broad, longitudinal costa on each side, 

 sutural margins slightly elevated on apical half, and with broad, 

 moderately deep basal depressions; surface coarsely, vaguely imbri- 

 cate-punctate, more or less transversely rugose, and sparsely clothed 

 with short, whitish hairs on apical third, the hairs being more distinct 

 in a vague depression toward apex, and feebly indicated at middle. 



Abdomen beneath nearly smooth on the median part, becoming 

 finely, densely punctate at the sides, and sparsely clothed with short, 

 recumbent, whitish pubescence; first segment vaguely flattened at 

 middle: last segment broadly rounded at apex; vertical portions 

 of segments rather densely, but not conspicuously pubescent ; pygid- 

 ium coarsely punctate, strongly carinate, the carina strongly project- 

 ing, and truncate at apex. Prosternum densely, finery punctate, and 

 rather densely clothed with short, recumbent, whitish pubescence; 

 prosternal lobe broad, moderately declivous, and broadly but not 

 deeply, arcuately emarginate in front, forming an arcuately rounded 



