NORTH AMERICAN BUPRESTID BEETLES 181 



greenish tinge; elytra black, with a feeble bluish or purplish reflec- 

 tion in certain lights ; beneath black, with a distinct aeneous tinge. 



Head with the front wide, nearly flat, wider at top than bottom, 

 the lateral margins feebly, obliquely expanded from bottom to top, 

 and with a vague, longitudinal, concave depression on the front and 

 vertex; surface finely granulose, coarsely, densely punctate, and 

 densely clothed with long, recumbent, white hairs; epistoma trans- 

 verse between the antenna! cavities, not elevated, and broadly* 

 deeply, arcuately emarginate in front; antennae extending slightly 

 beyond anterior margin of pronotum, serrate from the fourth joint, 

 and the outer joints slightly wider than long; eyes largo, rather 

 broadly oblong, and about equally rounded above and beneath. 



Pronotum nearly one-half wider than long, narrower at apex than 

 base, and widest at basal third; sides feebly obliquely expanded 

 from posterior angles to basal third, then obliquely narrowed to the 

 apical angles; when viewed from the side the marginal and sub- 

 marginal carinae are nearly straight, and rather broadly, equally 

 separated for their entire length; anterior margin slightly sinuate, 

 and the median lobe broadly, vaguely rounded ; base deeply, abruptly 

 emarginate at middle of each elytron, the median lobe broadly 

 rounded, and truncate or feebly emarginate in front of scutellum; 

 disk strongly, uniformly convex, without depressions, but with long, 

 rather distinct prehumeral carinae; surface densely, finely granu- 

 lose, finely, sparsely punctate, vaguely, transversely rugose at mid- 

 dle, becoming more strongly, obliquely rugose toward the sides, and 

 rather densely clothed with long, recumbent, white hairs. Scutel- 

 lum not transversely carinate, but the surface finely, densely 

 reticulate. 



Elytra about as wide as pronotum at base, and slightly wider at 

 base than behind middle; sides nearly parallel for a short distance 

 behind base, broadly, arcuately constricted at middle, strongly, 

 broadly expanded behind the middle, then arcuately narrowed to 

 the tips, which are separately, narrowly rounded, and finely serru- 

 late ; sides of abdomen very broadly exposed above ; disk evenly con- 

 vex, without any indications of costa, but with broad, moderately 

 deep basal depressions; surface rather coarsely, densely imbricate- 

 punctate, and sparsely, uniformly clothed with short, recumbent, 

 white hairs. 



Abdomen beneath finely, densely granulose, finely, densely punctate, 

 and densely clothed with long, recumbent white hairs and efflores- 

 cence, nearly concealing the surface ; first segment slightly flattened at 

 middle ; last segment broadly rounded at apex, and the margin feebly 

 serrate; suture between first and second segments visible from side 

 to side; lateral margin of first segment abruptly interrupted pos- 



