NORTH AMERICAN BUPRESTID BEETLES 261 



posterior angles, which are rectangular; when viewed from the side 

 the marginal and submarginal carinae are strongly sinuate, broadly 

 separated anteriorly, and connected to each other near the base; 

 anterior margin strongly sinuate, and the median lobe strongly, 

 broadly rounded; base feebly emarginate at middle of each elytron, 

 the median lobe broadly rounded, and subtruncate in front of scu- 

 tellum; disk rather strongly convex, with a broad, feeble depression 

 in front of scutelliun, a broad, moderately deep, oblique depression 

 on each side along lateral margin, and with feebly indicated, obtuse, 

 straight, prehumeral carinae; surface coarsely, densely, irregularly 

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

 clothed toward the sides with short, recumbent hairs. Scatellum 

 strongly, transversely carinate, and the surface densely, finely 

 reticulate. 



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

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

 behind the base, feebly, broadly constricted near middle, broadly 

 arcuately expanded behind the middle, then obliquely narrowed to 

 the tips, which are separately, broadly rounded, and feebly serrulate ; 

 sides of abdomen broadly exposed above; disk slightly flattened, 

 sutural margins elevated from middle to apex, and with broad, 

 moderately deep basal depressions; surface densely, coarsely, imbri- 

 cate-punctate, sparsely, uniformly clothed with short, inconspicuous 

 white hairs, and each elytron ornamented with sparsely pubescent 

 spots as follows : One in basal depression, one in front of middle, and 

 the other at apical third. 



Abdomen obsoletely granulose, rather densely, finely punctate, the 

 punctures connected transversely by fine, sinuate lines, which are 

 coarser on the first two segments, sparsely clothed with short, incon- 

 spicuous hairs, and with vague pubescent spots at the sides of the 

 last three segments; first and second segments feebly, longitudinally 

 depressed, and clothed with a few long hairs at the middle; last 

 segment broadly rounded at apex ; vertical portions of segments more 

 densely pubescent than ventral surface; pygidium sparsely punctate, 

 feebly carinate at middle, but the carina not projecting. Prosternum 

 finely, densely punctate, and rather densely clothed with long semi- 

 erect, whitish pubescence ; prosternal lobe broad, moderately decliv- 

 ous, and broadly truncate or vaguely emarginate in front ; prosternal 

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

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

 the anterior and middle pairs armed with a distinct tooth on inner 

 margin of apex. Posterior tarsi slightly more than one-half as long 

 as tibiae, and the first joint subequal in length to the following two 

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



