NORTH AMERICAN BUPRESTID BEETLES 211 



scutellum; disk moderately convex, sometimes with two obsolete 

 median depressions, a broad, shallow depression on each side along 

 lateral margin at middle, and with a short, feebly arcuate prehumeral 

 carina; surface densely, transversely rugose, and rather densely, 

 finely punctate between the rugae. 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 just behind the middle; sides feebly, arcuately 

 rounded behind the base, broadly, arcuately constricted in front of 

 middle, broadly, arcuately expanded behind the middle, then ob- 

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

 and minutely serrulate; sides of abdomen narrowly exposed above; 

 disk feebly flattened, sutural margin strongly elevated posteriorly, 

 and with broad, deep basal depressions; surface densely, finely 

 imbricate-punctate, and glabrous. 



Abdomen beneath finely, densely punctate, the punctures connected 

 transversely by fine, crenulate lines, which are much coarser on the 

 basal segment, and rather sparsely, evenly clothed with short, recum- 

 bent, whitish hairs; first segment strongly convex, and without a 

 median groove; last segment broadly rounded at apex; vertical 

 portions of the segments not conspicuously pubescent; pygidium 

 coarsely punctate, but not distinctly carinate. Prosternum coarsely, 

 densely punctate, somewhat rugose, and rather densely clothed with 

 long, erect inconspicuous hairs; prosternal lobe broad, moderately 

 declivous, and broadly rounded in front ; prosternal process rather 

 broad, the sides parallel to behind the coxal cavities, then obliquely 

 narrowed to the apex, which is narrowly rounded. Tibiae slender, 

 anterior pair slightly arcuate, and the anterior and middle pairs 

 armed with a minute tooth on inner margin at apex. Posterior 

 tarsi distinctly shorter than tibiae, and the first joint about as long 

 as the following three joints united. Tarsal claws dissimilar, an- 

 terior and middle ones feebly cleft near the tip, the teeth acute at 

 tips and nearly equal in length ; posterior claws cleft near the middle, 

 the inner tooth broad, much shorter than the outer one, and not 

 turned inward. 



Female. — Differs from the male in having the head entirely cupre- 

 ous, usually more uniformly cupreous above and beneath, front of 

 head broader and more convex; antennae scarcely extending beyond 

 anterior margin of pronotum; abdomen beneath more convex, shin- 

 ing, and the punctures and pubescence finer; prosternum smoother 

 and without long, erect hairs; tibiae without a tooth at apex, and 

 the tarsal claws similar on all feet, cleft near the middle, and the 

 inner tooth much shorter and broader than the outer one. 



Length, 4-6.25 mm. ; Avidth, 1-1.75 mm. 



