NORTH AMERICAN BUPRESTID BEETLES 271 



In front of scutellum; disk moderately convex, with a broad median 

 depression extending from base to near anterior margin, a broad, 

 deep, oblique depression on each side along lateral margin, and with 

 sharply defined, sinuate prehumeral carinae extending from posterior 

 angles to near middle ; surface coarsely, strongly, more or less trans- 

 versely rugose, sparsely, finely punctate between the rugae, and 

 sparsely clothed with short, whitish hairs toward the sides. Scutel- 

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

 reticulate. 



Elytra about as wide as pronotum at base, and subequal in width 

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

 behind base, feebly, broadly constricted in front of middle, broadly, 

 arcuately expanded behind middle, then obliquely narrowed to the 

 lips, which are separately, narrowly rounded, and strongly serrulate; 

 sides of abdomen narrowly exposed above; disk feebly, longitudinally, 

 concave along the sutural margins, causing a more or less distinct 

 costa on each elytron, sutural margins rather strongly elevated from 

 basal third to apex, and with broad, deep basal depressions; surface 

 densely, coarsely, imbricate-punctate, and each elytron ornamented 

 with more or less distinct, white pubescent spots as follows: A round 

 spot in basal depression, an elongate spot in front of middle, a small 

 round spot at apical third, and the spots more or less connected 

 laterally by irregularly distributed, short, white hairs. 



Abdomen beneath obsoletely granulose, sparsely, finely punctate, 

 the punctures connected transversely by more or less distinct, sinuate 

 lines, which are coarser and denser on the basal segments, and 

 sparsely, uniformly clothed with moderately long, recumbent, white 

 hairs; first segment feebly concave, more deeply depressed posteri- 

 orly, the suture between first and second segments visible at middle, 

 and elevated into a feebly, obtuse elevation on each side of the de- 

 pression ; last segment broadly rounded at apex ; vertical portions of 

 segments not conspicuously pubescent; pygidium strongly carinate 

 anteriorly, but the carina not projecting. Prosternum densely, 

 coarsely rugose, and sparsely clothed with long, semierect, white 

 hairs at middle; prosternal lobe broad, feebly declivous, and broadly 

 rounded in front; prosternal process broad, the sides parallel to 

 behind the coxal cavities, then abruptly narrowed to the apex, which 

 is acute. Tibiae slender, straight, and the anterior and middle pairs 

 armed with a short tooth on inner margin at apex. Posterior tarsi 

 slightly shorter than the tibiae, and the first joint about as long as the 

 following three joints united. Tarsal claws similar on all feet, cleft 

 near the middle, the inner tooth broad, shorter than the outer one, 

 and not turned inward. 



Length, 6.5 mm. ; width, 1.75 mm. 



