NORTH AMERICAN BUPRESTID BEETLES 19 



efflorescence. Scutellum strongly, transversely carinate, and the sur- 

 face nearly smooth. 



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

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

 hind base, broadly, vaguely constricted in front of middle, feebly, 

 broadly expanded behind middle, then obliquely narrowed to the 

 tips, which are strongly serrulate, and produced into an acute spine 

 at middle of each elytron ; sides of abdomen broadly exposed above ; 

 disk flattened, feebly, longitudinally concave along sutural margins, 

 which are feebly elevated posteriorly, a feeble, obtuse costa on each 

 elytron, and with wide, rather deep basal depressions ; surface coarsely, 

 irregularly imbricate-punctate, more or less transversely rugose, and 

 sparsely clothed with very short, inconspicuous hairs. 



Abdomen beneath finely, sparsely punctate, the punctures more 

 or less connected transversely by sinuate lines, which are coarser at 

 the sides of the first two basal segments, sparsely clothed with short, 

 inconspicuous hairs, sides of basal segment, and a large spot at 

 sides of other segments densely clothed with long, recumbent, yellow- 

 ish white pubescence and efflorescence; first segment convex at mid- 

 dle, and without long pubescence ; last segment broadly, transversely 

 truncate at apex, and with a marginal groove extending along sides 

 and apex ; vertical portion of segments densely pubescent and efflores- 

 cent; pygidium longitudinally carinate, the carina not projecting, 

 but the tip of the pygidium is broadly projecting, and strongly emar- 

 ginate at apex. Prosternum finely, sparsely punctate and granulose, 

 and sparsely clothed with long, erect, fine hairs ; prosternal lobe broad, 

 moderately declivous, and broadly, rather deeply, arcuately emargi- 

 nate in front; prosternal process broad, the sides nearly parallel to 

 behind coxal cavities, then obliquely rounded to the apex, which is 

 obtusely rounded. Tibiae slender, the anterior pair feebly arcuate, 

 and the anterior and middle pairs armed with a short, indistinct 

 tooth on inner margin at apex. Posterior tarsi about equal in length 

 to the tibiae, and the first joint nearly as long as the following joints 

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

 the inner tooth broad, much shorter than the outer one, and not 

 turned inward. 



Length, 8.75 mm. ; width, 2.25 mm. 



Female. — Differs from the male in having the front of head more 

 deeply depressed, and the longitudinal groove more distinct ; proster- 

 num more or less rugose, and without long, erect hairs at middle; 

 tibiae unarmed at apex; last abdominal segment strongly granulose, 

 more broadly truncate at apex, and the marginal groove only present 

 at sides. 



Length, 10 mm. ; width, 2.75 mm. 



