NORTH AMERICAN BUPRESTID BEETLES 303 



Heaq\ with the front rather wide, nearly flat, and slightly wider at 

 top than at bottom, the lateral margins feebly expanded from bottom 

 to vertex, then parallel to occiput, and with a broad, shallow, longi- 

 tudinal groove extending from the epistoma to vertex, and only feebly 

 indicated on the occiput; surface sparsely, coarsely punctate, strongly 

 rugose, and sparsely clothed with rather short, recumbent, whitish 

 pubescence; epistoma rather narrow between the antennae and 

 broadly, but not deeply, arcuately emarginate in front; antennae 

 scarcely extending to middle of pronotum, serrate from the fifth 

 joint, and the outer joints distinctly wider than long; eyes large, 

 broadly oval, and equally rounded above and beneath. 



Pronotum slightly wider than long, feebly narrower at apex than 

 base, and equal in width at apical third and posterior angles; sides 

 feebly, arcuately rounded from apical angles to basal fourth, then 

 arcuately constricted to the posterior angles, which are strongly 

 expanded outward; when viewed from the side the marginal carina 

 is very distinct and bisinuate, the submarginal carina nearly straight, 

 rather indistinct, the two carinae widely separated anteriorly, and 

 connected to each other at basal third; anterior margin strongly 

 sinuate and with a broadly rounded median lobe ; base feebly, broadly 

 emarginate at middle of each elytron, the median lobe strongly, 

 broadly rounded and broadly subtruncate in front of scutellum ; disk 

 strongly convex, with a vague, longitudinal, median depression 

 posteriorly, broadly but not deeply depressed along lateral margins 

 at middle, and with feebly indicated, arcuate, prehumeral carinae; 

 surface coarsely, densely rugose, sparsely, finely punctate between the 

 rugae, and sparsely clothed with very short, recumbent, whitish 

 pubescence. Scutellum not transversely carinate, the surface uneven 

 and obsoletely reticulate. 



Elytra as wide as pronotum at base, and slightly wider at base than 

 behind middle ; sides parallel for a short distance behind base, feebly, 

 broadly constricted at middle, broadly, arcuately expanded behind 

 the middle, then obliquely narrowed to the tips, which are separately, 

 rather narrowty rounded, but not serrulate; sides of abdomen nar- 

 rowly exposed above ; disk slightly flattened, sutural margins strongly 

 elevated posteriorly, with very broad, shallow basal depressions, but 

 without a longitudinal carina between humeri and lateral margin ; 

 surface finely densely imbricate-punotate, and sparsely, uniformly 

 clothed with short recumbent, whitish pubescence. 



Abdomen beneath obsoletely granulose, densely, finely, transversely 

 rugose, and sparsely clothed with short, recumbent, whitish hairs; 

 first and second segments convex at middle, and the suture between 

 the two segments feebly indicated at the sides ; last segment broadly 

 rounded at apex, vertical portions of segments more densely pubes- 



