NORTH AMERICAN BUPRESTID BEETLES 285 



of pronotum, serrate from the fifth joint, and the outer joints as 

 wide as long; eyes large, elongate, and more acutely rounded 

 beneath than above. 



Pronotum about one-fourth wider than long, about equal in width 

 at base and apex, and widest near middle; sides slightly arcuately 

 rounded from apical angles to behind middle, then more strongly 

 narrowed to the posterior angles, which are rectangular; when 

 viewed from the side the marginal and submarginal carinae are 

 strongly sinuate, narrowly separated anteriorly, and connected to 

 each other behind the middle; anterior margin strongly sinuate, 

 and the median lobe strongly, broadly rounded ; base feebly emargi- 

 nate at middle of each elytron, the median lobe strongly, broadly 

 rounded, and distinctly emarginate in front of scutellum; disk 

 moderately convex, with a broad, elongate median depression, more 

 or less interrupted at middle, and slightly deeper posteriorly, a broad, 

 deep, oblique depression on each side along the lateral margin, which 

 is slightly flattened, and with straight, vague, obtuse prehumeral 

 carinae; surface vaguely granulose, strongly, transversely rugose, 

 sparsely, finely punctate between the rugae, and sparsely clothed 

 with yellowish pubescence in the lateral depressions. 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 behind middle; sides nearly parallel for a short 

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

 broadly, arcuately expanded behind the middle, then obliquely nar- 

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

 feebly serrulate; sides of abdomen narrowly exposed above; disk 

 feebly, longitudinally concave along the sutural margins, sutural 

 margins strongly elevated from basal third to apex, and with broad, 

 shallow basal depressions; surface coarsely, densely imbricate-punc- 

 tate, and each elytron ornamented with three round, yellowish 

 pubescent spots, one in basal depression, one in front of middle, and 

 the other at apical third. 



Abdomen beneath obsoletely reticulate, finely, sparsely punctate, 

 the punctures connected transversely by more or less distinct sinuate 

 lines, which are coarser on the basal segments and sparsely, uni- 

 formly clothed with rather short, recumbent, whitish hairs; first 

 segment flattened or slightly concave at middle ; last segment broadly 

 rounded at apex, vertical portions of the segments not conspicuously 

 pubescent; pygidium sparsely, coarsely punctate, but not distintctly 

 carinate. Prosternum finely, sparsely punctate, and rather densely 

 clothed with long, erect, fine, whitish hairs, which extend along the 

 middle of body to behind the middle of second abdominal segment ; 

 prosternal lobe broad, feebly declivous, and broadly but not deeply 



