NORTH AMERICAN BUPRESTID BEETLES 215 



becoming aureo-cupreous on the occiput ; pronotum and elytra reddish 

 cupreous, with a more or less aureous tinge ; beneath aeneo-cupreous. 



Head with the front rather broad, feebly convex, slightly wider at 

 top than bottom, the lateral margins feebly, arcuately expanded at 

 middle, and without distinct depressions; surface rather densely, 

 coarsely punctate, more or less irregularly rugose, the rugae becom- 

 ing longitudinally on the occiput, and sparsely clothed with short, 

 whitish hairs; epistoma slightly transverse between the antennae, 

 and broadly, deeply, arcuately emarginate in front; antennae extend- 

 ing to apical third of pronotum, serrate from the fourth joint, and the 

 outer joints wider than long; eyes moderately large, narrowly oblong, 

 and about equally rounded above and beneath. 



Pronotum two-thirds wider than long, slightly wider at apex 

 than base, and widest near middle; sides feebly, arcuately rounded 

 from apical angles to near base where they are parallel to each other; 

 when viewed from the side the marginal and submarginal carinae are 

 vaguely sinuate, rather narrowly separated anteriorly, and connected 

 to each other behind the middle; anterior margin slightly sinuate, 

 and the median lobe scarcely produced; base slightly emarginate at 

 middle of each elytron, the median lobe broadly rounded, and sub- 

 truncate in front of the scutellum; disk moderately convex, with 

 two broad, vague median depressions, a broad, shallow lateral de- 

 pression on each side, and with distinct, arcuate prehumeral carinae; 

 surface coarsely, transversely rugose, finely, sparsely punctate be- 

 tween the rugae, and sparsely clothed toward the sides with short, 

 inconspicuous 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 feebly, broadly constricted in 

 front of middle, feebly, arcuately expanded behind the middle, more 

 or less sinuate near the tips, which are separately, rather narrowly 

 rounded, and strongly serrulate; sides of abdomen narrowly exposed 

 above; disk slightly flattened above, without a distinct longitudinal 

 costa, the sutural margins strongly elevated behind the middle, and 

 with broad, moderately deep basal depressions; surface densely, 

 coarsely imbricate-punctate, and sparsely clothed with very short 

 white hairs. 



Abdomen beneath obsoletely granulose, sparsely, finely punctate, 

 more densely toward the sides of basal segment, and sparsely, uni- 

 formly clothed with short, recumbent, whitish hairs; first segment 

 convex, and without a median depression; last segment broadly 

 rounded at apex; vertical portions of segments not conspicuously 

 pubescent ; pygidium sparsely, coarsely punctate, feebly longitudi- 

 nally carinate, but the carina not projecting. Prosternum sparsely. 



