NORTH AMERICAN BUPRESTID BEETLES 73 



granulose, with a few coarse punctures intermixed, becoming feebly, 

 longitudinally rugose on the occiput, and rather densely clothed 

 on lower half with long, silvery white pubescence, which does not 

 conceal the surface; epistoma not transverse between the antennae, 

 and broadly but not deeply, arcuately emarginate in front ; antennae 

 extending beyond the posterior angles of pronotum, serrate from 

 the fourth joint, all joints distinctly longer than wide, and clothed 

 on the under side with long, sparsely placed, white hairs ; eyes large, 

 elongate, and slightly more acutely rounded beneath than above. 



Pronotum about one-third wider than long, base and apex about 

 equal in width, and widest along apical half; sides nearly parallel 

 from apical angles to middle, then obliquely narrowed to the pos- 

 terior angles, which are rectangular; when viewed from the side the 

 marginal carina is feebly sinuate, the submarginal carina straight, 

 the two carinae rather widely separated anteriorly, and connected 

 to each other near the base ; anterior margin rather strongly sinuate, 

 and the median lobe broadly rounded; base transversely bisinuate, 

 the median lobe feebly produced, and arcuately emarginate in front 

 of scutellum; disk moderately convex, with two broad, deep depres- 

 sions arranged longitudinally at the middle, a rather deep, broad 

 depression along lateral margin extending from apical fourth to 

 base, and with indistinct prehumeral carinae; surface densely, finely 

 granulose, transversely rugose on disk, and with a few fine punc- 

 tures between the rugae and toward the sides. Scutellum strongly, 

 transversely carinate, and the surface finely reticulate. 



Elytra slightly wider than pronotum at base, and about equal in 

 width at base and apical third; sides feebly, broadly constricted in 

 front of middle, arcuately expanded near apical third, then obliquely 

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

 and finely serrulate; sides of abdomen scarcely exposed above; disk 

 slightly flattened, sutural margins elevated posteriorly, with broad, 

 moderately deep basal depressions, but without distinct longi- 

 tudinal costae; surface densely, coarsely imbricate-punctate. 



Abdomen beneath sparsely, finely punctate, and feebly granulose 

 on the basal segments, becoming vaguely punctate toward the apex, 

 the punctures connected transversely by fine, sinuate lines, and 

 sparsely clothed with short, inconspicuous hairs; first and second 

 segments more or less flattened, but not grooved or pubescent at 

 middle; vertical portions of segments not conspicuously pubescent; 

 pygidium sparsely, coarsely punctate, but not longitudinally cari- 

 nate. Prosternum finely, densely granulose, with a few large punc- 

 tures intermixed, and sparsely clothed with inconspicuous hairs: 

 prosternal lobe rather broad, strongly declivous, and vaguely emar- 

 ginate in front; prosternal process rather narrow, the sides parallel 

 to behind the coxal cavities, then obliquely narrowed to the apex, 



