NOIJTH AMERICAN BUPEESTID BEETLES 117 



and arcuately attenuate from apical third to the tips, which are sepa- 

 rately, rather broadly rounded, and strongly serrulate; sides of abdo- 

 men broadly exposed above; disk rather strongly flattened, without 

 longitudinal costae, sutural margins slightly elevated from apical 

 third to tip, and with broad, moderately deep, basal depressions ; sur- 

 face densely, coarsely imbricate-punctate, and with a narrow vitta of 

 rather dense yellowish or whitish pubescence extending from the 

 basal depression to the apex (sometimes the vitta only distinct in the 

 basal depressions). 



Abdomen beneath finely and sparsely punctate along the middle, 

 more densely and coarsely at the sides, becoming coarsely rugose on 

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

 cinereous hairs; first segment slightly flattened at the middle, the 

 second with a deep, smooth groove, which is wider in front, and 

 extending two thirds to the posterior margin of segment; last seg- 

 ment broadly rounded at apex; vertical portions of the segments 

 densely clothed with yellowish or whitish pubescence; pygidium 

 coarsely punctate, strongly carinate, the carina projecting and trun- 

 cate at apex. Prosternum densely punctate, slightly rugose, and 

 sparsely clothed with short, cinereous hairs; prosternal lobe broad, 

 strongly declivous, and broadly rounded or subtruncate in front; 

 prosternal process broad, the sides parallel to behind the coxal cavi- 

 ties, then abruptly narrowed to the apex, which is acute. Tibiae 

 slender, nearly straight, the anterior and middle pairs with a small 

 tooth on the inner margin near apex, and the posterior pair simple. 

 Posterior tarsi distinctly shorter than tibiae, and the first joint about 

 equal in length to the following three joints united. Tarsal claws 

 dissimilar, anterior and middle ones cleft near the tip and the teeth 

 nearly equal in length, the posterior ones cleft near the middle, the 

 inner tooth slightly shorter and feebly turned inward, but the tips 

 distant. 



Female. — Differs from the male in being usually more robust ; head 

 brownish black with a more or less distinct aeneous or cupreous tinge 

 slightly more convex, front much broader, sides nearly parallel, 

 slightly narrower at top than at bottom, surface not quite so densely 

 punctured, the longitudinal groove more deeply impressed on occiput, 

 and the eyes narrower and more broadly rounded above than beneath ; 

 abdomen with the second ventral segment convex, and not grooved 

 at the middle; prosternum shining and more finely punctate; tibiae 

 unarmed at apex, and the tarsal claws similar on all feet, cleft near 

 the middle, the inner tooth slightly shorter, and feebly turned inward, 

 but the tips widely separated. 



Length, 4.25-9.5 mm. ; width, 1-2.25 mm. 



