NORTH AMERICAN BUPRESTID BEETLES 89 



rowed to the posterior angles, which are rectangular; when viewed 

 from the side the marginal and submarginal carinae are nearly 

 straight, narrowly separated anteriorly, and connected to each other 

 near the base ; anterior margin strongly sinuate, and the median lobe 

 strongly, broadly rounded; base nearly transversely truncate, except 

 for a broad, feeble emargination at middle of each elytron; disk 

 moderately convex, with two broad, vague, median depressions, one 

 in front of scutellum, the other at apical third, a broad, shallow de- 

 pression on each side along lateral margin, and with rather short, 

 feebly indicated, obtuse, prehumeral carinae ; surface densely, finely 

 granulose, closely, vaguely, transversely rugose, finely, sparsely 

 punctate between the rugae, and without distinct pubescence. Scutel- 

 lum rather strongly, transversely carinate, and the surface densely, 

 finely reticulate. 



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

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

 distance behind base, very broadly, feebly constricted in front of 

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

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

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

 vaguely flattened, without longitudinal costae, sutural margins rather 

 strongly elevated posteriorly, and with broad, shallow basal depres- 

 sions; surface densely and rather coarsely imbricate-punctate, and 

 without distinct pubescent. 



Abdomen beneath obsoletely granulose, sparsely, finely punctate, 

 more or less rugose on basal segment, and sparsety clothed with mod- 

 erately long, recumbent, fine hairs; first segment broadly, longitudi- 

 nally depressed; second segment broadly, transversely concave when 

 viewed from the side ; last segment rather broadly rounded at apex ; 

 vertical portions of segments not conspicuously pubescent ; pygidium 

 sparsely, coarsely punctate, but not longitudinally carinate. Pro- 

 sternum finely, densely granulose, and sparsely clothed with mod- 

 erately long, recumbent, white hairs; prosternal lobe broad, moder- 

 ately declivous, and broadly, vaguely emarginate in front ; prosternal 

 process narrow, the sides parallel to behind the coxal cavities, then 

 obliquely narrowed to the apex, which is acute. Tibiae slender, and 

 all three pairs armed with a long, slender tooth on inner margin at 

 apex. Posterior tarsi nearly as long as the tibiae, and the first joint 

 as long as the following joints united. Tarsal claws similar on all 

 feet, cleft near middle, the outer tooth acute at apex, the inner one 

 broader, turned inward, and the tip touching that of the opposite 

 side. 



Length, 5 mm. ; width, 1 mm. 



Female. — Differs from the male in having front of head more 

 convex, slightly wider at top than bottom, uniformly aeneous, and 



