NORTH AMERICAN BUPRESTID BEETLES 187 



narrower on the occiput, but becoming broader toward the epistoma, 

 where it is deeply depressed, and with a smooth, narrow, longitudinal 

 groove in bottom of depression on occiput; surface coarsely, densely 

 punctate, more or less rugose, and sparsely clothed with short, in- 

 conspicuous hairs; epistoma not transverse between the antennae, 

 strongly elevated, and feebly, broadly, arcuately emarginate in front ; 

 antennae extending to middle of pronotum, serrate from the fourth 

 joint, and the outer joints wider than long; eyes moderately large, 

 rather narroAvly oblong, and about equally rounded beneath and 

 above. 



Pronotum about two-fifths wider than long, slightly wider at base 

 than apex, and widest at middle ; sides regularly, arcuately rounded 

 from apical angles to posterior angles, which are rectangular ; when 

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

 submarginal carina nearly straight, the two carinae rather narrowly 

 separated anteriorly, and connected to each other behind the middle ; 

 anterior margin strongly sinuate, and the median lobe strongly, 

 broadly rounded; base nearly transverse to middle of each elytron, 

 then broadly, strongty rounded to the scutellum; disk moderately 

 convex, broadly, feebly depressed along basal half, with a deep, 

 arcuate depression extending from lateral margin at middle to base, 

 and enveloping a large, round elevation near posterior angles, which 

 replace the prehumeral carinae; surface deeply, closely rugose, the 

 rugae transverse near base at middle, but becoming oblique at sides 

 and near apex, and coarsely punctate between the rugae. Scutellum 

 deeply depressed at middle, but not transversely carinate. 



Elytra about as wide as pronotum at base, and about equal in 

 width at base and behind middle; sides nearly parallel for a short 

 distance behind base, broadly, arcuately constricted in front of 

 middle, broadly, arcuately expanded behind middle, then obliquely 

 narrowed to the tips, which are separately, broadly rounded, and 

 strongly serrulate; sides of abdomen only vaguely exposed above; 

 disk slightly flattened, without distinct longitudinal costa, sutural 

 margins slightly elevated posteriorly, and with broad, moderately 

 deep basal depressions ; surface densely, finely granulate-punctate, 

 and sparsely clothed with very short, inconspicuous hairs. 



Abdomen beneath obsoletely granulose, rather densely, finely punc- 

 tate, transversely rugose at sides of basal segment, and sparsely, 

 uniformly clothed with very short, recumbent, white hairs; first 

 segment convex at middle; last segment broadly rounded or sub- 

 truncate at apex; vertical portions of segments not conspicuously 

 pubescent; pygidium densely punctate, strongly carinate anteriorly, 

 but the carina not projecting. Prosternum sparsely, coarsely punc- 

 2305—28 13 



