NORTH AMERICAN BUPRESTID BEETLES 99 



from near apical angles to base; when viewed from the side the 

 marginal carina is strongly sinuate, the submarginal carina nearly 

 straight, the two carinae narrowly separated at apical fourth, and 

 connected to each other near the base; anterior margin strongly 

 sinuate, with a feebly rounded median lobe; base distinctly emar- 

 ginate at middle of each elytron, the median lobe broadly rounded 

 and feebly emarginate or subtruncate in front of scutellum; disk 

 moderately convex, with a broad, shallow median depression behind 

 the middle, a rather broad, deep depression on each side along the 

 lateral margin, and with a distinct, broadly rounded prehumeral 

 carina extending from posterior angle obliquely inward to basal 

 third; surface coarsely, densely, transversely rugose, finely punctate 

 between the rugae, and at the sides sparsely clothed with long, 

 recumbent, yellowish pubescence. Scutellum distinctly, trans- 

 versely carinate, and the surface finely reticulate. 



Elytra slightly wider than pronotum at base ; sides nearly parallel 

 behind base, feebly narrowed to behind the middle, then obliquely 

 attenuate to the tips, which are separately, narrowly rounded, and 

 coarsely serrulate; sides of abdomen narrowly exposed above; disk 

 depressed, with a distinct smooth, longitudinal costa extending from 

 humeri to near the tips, the sutural margins feebly elevated pos- 

 teriorly, the interval between the sutural margin and longitudinal 

 costa fiat, and with broad, shallow basal depressions; surface 

 coarsely, feebly imbricate-punctate, and sparsely clothed with short, 

 recumbent, whitish pubescence. 



Abdomen beneath finely, sparsely punctate at the middle, the punc- 

 tures becoming denser toward the sides, where the surface is rathei 

 densely clothed with short, recumbent, yellowish pubescence; verti- 

 cal portions of the segments densely but not conspicuously clothed 

 with yellowish pubescence; first and second segments convex at 

 middle, and not pubescent; last segment broadly truncate at apex; 

 pygidium with a narrow projecting carina, which is emarginate at 

 apex. Prosternum densely, finely punctate on median parts, the 

 punctures becoming coarser toward the sides, and rather densely 

 clothed at middle with long, erect, inconspicuous hairs; prosternal 

 lobe broad, feebly declivous, broadly rounded or subtruncate in front ; 

 prosternal process broad, flat, the sides parallel to behind the coxal 

 cavities, and the apex broadly rounded. Posterior coxae with the 

 posterior margin transverse, strongly sinuate, and the exterior angle 

 rectangular. Tibiae slender, the anterior and middle pairs feebly 

 arcuate, and with a small tooth on the inner margin at apex. Pos- 

 terior tarsi as long as the tibiae, and the first joint nearly as long as 

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



