NORTH AMERICAN BUPRESTID BEETLES 191 



Female. — Form rather robust, slightly flattened above, and rather 

 strongly shining; above uniformly reddish cupreous, with a feeble 

 aeneous tinge along the sutural margins of elytra ; beneath more 

 aeneo-cupreous and shining than above. 



Head with the front rather wide, about equal in width at top and 

 bottom, the lateral margins nearly parallel to each other, and with 

 a deep, broad depression extending from occiput to epistoma, the 

 depression narrower on the occiput, but becoming broader toward the 

 epistoma, and with a narrow, longitudinal groove in bottom of de- 

 pression extending from occiput to middle of front ; surface coarsely 

 but not very densely punctate, and sparsely clothed with short, re- 

 cumbent, white hairs; epistoma strongly transverse between the 

 antennae, slightly elevated, and broadly but not very deeply, arcu- 

 ately emarginate in front; antennae extending to middle of pro- 

 notum, serrate from the fourth joint, and the outer joints slightly 

 wider than long; eyes large, rather broadly oblong, and equallj 

 rounded above and beneath. 



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

 at base and apex, and widest at middle ; sides arcuately rounded from 

 apical angles to near the base, where they are strongly sinuate, and 

 the posterior angles rectangular ; when viewed from the side the mar- 

 ginal carina is strongly sinuate, the submarginal carina nearly 

 straight, the two carinae rather narrowly separated anteriorly, and 

 connected to each other near the base; anterior margin strongly 

 sinuate, and the median lobe broadly rounded; base feebly, broadly 

 emarginate at middle of each elytron, and with the median lobe very 

 broadly rounded; disk moderately convex, with a broad, shallow 

 median depression, which is broader posteriorly, a deep, arcuate 

 depression extending from lateral margin at middle to base, and 

 enveloping a large, round elevation near posterior angle, and an ob- 

 solete, obtuse prehumeral carina ; surface sparsely, coarsely punc- 

 tate, feebly rugose, the rugae transverse toward the base, and 

 oblique at the sides, and sparsely clothed with short, recumbent, 

 whitish haiis. Scutellum not transversely carinate, but the surface 

 finely, densely reticulate. 



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

 than behind middle ; sides nearly parallel for a short distance behind 

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

 broadly expanded behind middle, then obliquely narrowed to the 

 tips, which are separately, narrowly rounded, and feebly serrulate; 

 sides of abdomen feebly exposed above; disk slightly flattened, 

 vaguely, longitudinally depressed along sutural margins, causing a 

 very vague, obtuse costa on each elytron, sutural margins feebly ele- 

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



