NORTH AMERICAN BUPRESTID BEETLES 121 



tips, which are separately, broadly rounded, and strongly serrulate; 

 sides of abdomen broadly exposed above; disk feebly flattened, with- 

 out longitudinal costae, sutural margins feebly elevated at apical 

 third, and with broad, moderately deep basal depressions; surface 

 finely, densely imbricate-punctate, without distinct pubescence, except 

 sometimes with a few short white hairs at the tips. 



Abdomen beneath rather iinely and densely punctate, becoming 

 somewhat rugose on the basal segment, and sparsely clothed with 

 short, recumbent, whitish pubescense ; first segment strongly flattened 

 or feebly concave at the middle, the second with a deep, smooth 

 groove, which has the sides parallel, and extending to about the 

 middle of the segment ; last segment broadly rounded at apex ; verti- 

 cal portions of segments rather densely clothed with recumbent, 

 whitish pubescence; pygidium coarsely punctate, strongly carinate, 

 the carina projecting and truncate at apex. Prosternum coarsely, 

 densely, punctate, coarsely rugose, and sparsely clothed with incon- 

 spicuous hairs ; prosternal lobe broad, strongly declivous, and broadly 

 rounded in front; prosternal process broad, surface some times con- 

 cave, and the sides parallel to behind the coxal cavities, then abruptly 

 narrowed to the apex, which is acute. Tibiae slender, nearly straight, 

 the middle and anterior pairs with a distinct tooth on the imier 

 margin at apex, and the posterior pair simple. Posterior tarsi dis- 

 tinctly shorter than the tibiae, and the first joint about equal in length 

 to the following three joints united. Tarsal claws dissimilar, an- 

 terior ones cleft near the tip, and the teeth nearly equal in length; 

 middle and posterior claws cleft near the middle, the inner tooth 

 shorter than the outer one, and slightly turned inward, but the tips 

 distant. 



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

 slightly more convex, longitudinal groove more deeply impressed, 

 sides more parallel, and slightly narrower at top than at bottom, the 

 antennae shorter, and eyes narrower; abdomen beneath more finely, 

 sparsely punctate, more sparsely pubescent, and the first two seg- 

 ments convex at the middle; prosternum not quite so densely punc- 

 tate and rugose; tooth at apex of anterior and middle tibiae shorter 

 and more indistinct, and the claws alike on all the feet, similar to 

 those on the posterior feet of the male. 



Length, 5.75-8.75 mm. ; width, 1.5-2.25 mm. 



Type locality. — North Cheyenne Canyon, Colo. 



Other localities. — Arizona: Flagstaff, July 5, and Williams, June 

 9 (Barber and Schwarz). Colorado: Colorado Springs, June 15 



(H. F. Wickham). New Mexico: Las Vegas ( ). Utah: 



American Fork Canyon, June 23 (Hubbard and Schwarz). 



