NORTH AMERICAN BUPRESTID BEETLES 87 



middle, broadly, arcuately expanded behind the middle, then 

 obliquely narrowed to the tips, which are separately, rather narrowly 

 rounded, and feebly serrulate; sides of abdomen narrowly exposed 

 above; disk slightly flattened, sutural margins strongly elevated 

 behind the middle, with broad, moderately deep basal depressions, 

 and with an obsolete longitudinal costa on each side ; surface densely, 

 coarsely imbricate-punctate. 



Abdomen beneath obsoletely reticulate, sparsely, finely punctate, 

 becoming transversely rugose on basal segments, and sparsely 

 clothed with short, recumbent, whitish hairs; first and second seg- 

 ments vaguely, longitudinally flattened at the middle, and the first 

 segment clothed with a longitudinal series of longer hairs at middle ; 

 vertical portions of segments not conspicuously pubescent; pygidium 

 sparsely, coarsely punctate, and with a vague longitudinal carina, 

 which is not projecting. Presternum finely, sparsely punctate, 

 somewhat granulose, and clothed at the middle with a longitudinal 

 series of long, fine, erect hairs ; prosternal lobe rather broad, strongly 

 declivous, and broadly but not very deeply, arcuately emarginate in 

 front; prosternal process rather narrow, the sides parallel to behind 

 the coxal cavities, then obliquely narrowed to the apex, which is 

 acute. Posterior coxae with the posterior margin broadly, arcuately 

 emarginate, with the exterior angle nearly rectangular. Tibiae slen- 

 der, straight, and armed with a distinct tooth on inner margin at 

 apex. Posterior tarsi slightly shorter than the tibiae, and the first 

 joint about as long as the following joints united. Tarsal claws 

 similar on all feet, cleft near the middle, the outer tooth acute at 

 apex, the inner one slightly broader, turned inward, and the tip 

 sometimes touching that of the opposite side. 



Length, 4 mm.; width, 1 mm. 



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

 formly aeneous, with a brownish cupreous tinge, broader, rather 

 strongly convex, the surface more coarsely punctured, and the pubes- 

 cence shorter ; eyes more broadly rounded above than beneath ; pres- 

 ternum more sparsely punctate, and not clothed with long, erect 

 hairs at middle; first two abdominal segments convex at middle and 

 without long pubescence, and the tibae unarmed at apex. 



Type locality. — Lyme, Conn. 



Other localities. — Massachusetts, Sherborn; Illinois, La Grange 

 and Galesburg. 



Type, allotype, and paratypes. — Cat. No. 40991. U. S. N. M. 



Paratypes. — Collections of C. A. Frost, and the Illinois Natural 

 History Survey. 



Described from 17 specimens, 7 males and 10 females. Type 

 (male), allotype, and three paratypes collected on hazel {Oorylus 



