166 MISC. PUBLICATION 4 7 0, U. S. DEPT. OF AGRTCTJLTTJRE 



Figure 68. — Anterior tibia of male (A), clypeus (B), and last visible abdominal 

 sternite of male (C) and of female (D) of Chrysobothris canadensis. 



Elytra distinctly wider than pronotum, nearly twice as long as wide, widest 

 behind middle; sides sinuate and slightly diverging from humeral angles to 

 behind middle, then arcuately converging to tips, which are separately broadly 

 rounded; lateral margins slightly serrate posteriorly; basal depressions broad 

 and very deep; humeral depressions broad and shallow; surface glabrous, 

 densely, irregularly punctate between smooth elevations. Each elytron with the 

 flrst costa sinuate, rather strongly elevated from apex to basal third, the other 

 costae broadly interrupted and represented by irregular, narrow, smooth spaces. 



Abdomen beneath coarsely, rather densely, irregularly punctate, clothed with 

 a few short, recumbent, inconspicuous hairs, without distinct lateral callosities, 

 intervals finely granulose ; last visible sternite deeply, broadly, arcuately emar- 

 ginate at apex, deeply depressed along lateral margins basally and with a vague 

 submarginal ridge on basal half, lateral margins coarsely serrate; eighth ter- 

 gite coarsely, sparsely, irregularly punctate, finely granulose, not longitudinally 

 carinate, upper miargin slightly, broadly emarginate at apex. Prosternum 

 coarsely, confluently punctate, densely clothed with long, erect, white hairs, with- 

 out a distinct median lobe. Anterior femur with a short, obtuse tooth, which is 

 indistinctly dentate on outer margin. Anterior tibia arcuate, with a rounded 

 dilation at apex, strongly constricted behind dilation ; middle and posterior tibiae 

 gradually dilated toward apex, the former arcuate and the latter straight. 



Length 15 mm., width 6.6 mm. 



Female. — Differing from the male in having the head uniformly purplish 

 brown, more sparsely punctured and with the pubescence shorter, the antenna 

 purplish brown, slightly bronzy green toward apex, the last visible sternite with 

 a small semicircular notch at apex, the eighth tergite more densely, coarsely 

 punctate, prosternum more sparsely punctured and less densely pubescent, and 

 the anterior tibia unarmed at apex. 



Kedescribed from the male type from Waterton, Alberta, and female 

 allotype from Banff, in the collection of W. J. Chamberlin. 

 Type locality. — Banff, Alberta, Canada. 



