NORTH AMERICAN BUPRESTID BEETLES 35 



arcuately emarginate in front; antenne scarcely extending to middle 

 of pronotum, serrate from the fourth joint, and the outer joints 

 about as wide as long; eyes large, and about equally rounded above 

 and beneath. 



Pronotum two-fifths wider than long, base and apex about equal 

 in width, and widest in front of middle ; sides arcuately rounded from 

 apical angles to basal third, then obliquely narrowed to the posterior 

 angles, which are rectangular; marginal and submarginal carinae 

 when viewed from the side are strongly sinuate, the carinae narrowly 

 separated anteriorly, and connected to each other at the basal fourth ; 

 anterior margin feebly sinuate, with a broadly rounded median lobe ; 

 base deeply emarginate at middle of each elytron, the median lobe 

 broadly rounded, and subtruncate in front of the scutellum; disk 

 moderately convex, with two round depressions arranged longi- 

 tudinally at the middle, the anterior one only feebly indicated, a 

 rather deep, oblique depression along lateral margins near middle, 

 a small, round depression near posterior angles, and with or without 

 distinct, short prehumeral carinae; surface coarsely, densely rugose, 

 rather densely punctate, and sparsely clothed with short, incon- 

 spicuous, whitish pubescence, which is slightly denser and longer 

 in the lateral depressions. Scutellum strongly, transversely carinate, 

 and the surface feebly reticulate. 



Elytra slightly wider than pronotum at base and slightly narrower 

 at base than at apical third; sides nearly parallel behind humeri, 

 broadly, arcuately constricted in front of middle, broadly, arcuately 

 expanded at apical third, then obliquely attenuate to the tips, which 

 are separately, broadly rounded, and distinctly irregularly serrulate ; 

 sides of abdomen broadly exposed above; disk slightly flattened, 

 feebly, longitudinally depressed along suture, which is slightly ele- 

 vated posteriorly, and with broad, deep basal depressions; surface 

 finely, densely granulate-punctate, and sparsely, uniformly clothed 

 with short, recumbent whitish hairs. 



Abdomen beneath finely, rather densely punctate on the apicai 

 segments, but becoming coarsely punctate and transversely rugose on 

 the basal segments, and sparsely clothed with short, recumbent, 

 whitish pubescence; first segment broadly flattened at the middle, 

 second with a deep, nearly smooth groove at the middle, the groove 

 slightly wider anteriorly, and extending from the anterior margin 

 to behind middle of segment; vertical portions of the segments 

 densely clothed with long, recumbent. }^ellowish white pubescence; 

 pygidium coarsely punctate, with the median carina strongly ele- 

 vated, strongty projecting, and truncate at apex. Prosternum 

 coarsely, sparsely punctate and rather densely clothed with moder- 

 ately long, semierect, whitish hairs; prosternal lobe strongly decliv- 



