NORTH AMERICAN BUPRESTID BEETLES 49 



tinge ; beneath cupreous, more or less aeneous on the legs, and more 

 shining than above. 



Head with the front rather wide, nearly flat, about equal in width 

 at top and bottom, the lateral margins parallel to each other, and 

 with a distinct, narrow, longitudinal groove extending from occiput 

 to middle of front ; surface coarsely, sparsely punctate, feebly rugose 

 near epistoma and occiput, intervals smooth and shining, and 

 sparsely clothed with short, semierect, white hairs; epistoma trans- 

 verse between the antennal cavities, strongly elevated, and with a 

 semicircular emargination in front; antennae extending nearly to 

 middle of pronotum, serrate from the fourth joint, and the outer 

 joints wider than long; eyes large, rather broadly oblong, and 

 equally rounded above and beneath. 



Pronotum one-half wider than long, about equal in width at base 

 and apex, and widest in front of middle; sides slightly arcuately 

 rounded, vaguely sinuate near posterior angles, which are nearly 

 rectangular ; when viewed from the side the marginal carina is vaguely 

 sinuate, the submarginal carina feebly arcuate, and the two carinae 

 rather widely separated for their entire length; anterior margin 

 nearly transversely truncate, and without a median lobe; base 

 strongly, broadly emarginate at middle of each elytron, the median 

 lobe broadly rounded, and transversely truncate in front of scu- 

 tellum; disk moderately convex, with a broad, vague median depres- 

 sion anteriorly, a deeper, transverse, concave depression along base, 

 connected laterally to a deep, oblique depression along lateral mar- 

 gins, and with feebly indicated, prehumeral carinae; surface finely, 

 densely reticulate, finely rugose, the rugae widely separated, trans- 

 versely arcuate on the disk, but becoming more oblique toward the 

 sides, sparsely punctate between the rugae, and sparsely clothed with 

 short, recumbent, white hairs. Scutellum strongly, 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 or vaguely 

 sinuate for a short distance behind the base, vaguely, broadly con- 

 stricted in front of middle, vaguely, arcuately expanded behind 

 middle, then obliquely narrowed to the tips, which are separately, 

 broadly rounded, and coarsely serrulate; sides of abdomen rather 

 broadly exposed above; disk feebly flattened, with distinct, obtuse 

 longitudinal costa extending from basal depression to apical third, 

 sutural margins elevated posteriorly, and with broad, deep, basal 

 depressions; surface finely, densely imbricate-punctate. and sparsely. 

 uniformly clothed with short, recumbent, white hairs. 



Abdomen beneath obsoletely granulose, sparsely, finely punctate. 

 the punctures more or less connected transversely by sinuate lines, 

 which are coarser at sides of basal segment, and sparsely, uniformly 



