A REVISION OF NORTH AMERICAN CHRYSOBOTHRINI 



245 



Figure 107. — Anterior tibia of male (A), clypeus (2J), and last visible abdomi- 

 nal sternite of male (C) and of female (D) of Ghrysohothris Ucolor. 



Pronotum twice as wide as long, slightly narrower at apex than at base, 

 widest along middle; sides nearly parallel (slightly sinuate at middle), obliquely 

 truncate at apical angles ; posterior angles fitting closely to elytra ; anterior 

 margin moderately sinuate, with an indistinct, broadly rounded, median lobe ; 

 base broadly, deeply, arcuately emarginate on each side, median lobe broadly 

 rounded, truncate in front of scutellum; disk moderately, uniformly convex, 

 without callosities or depressions ; surface glabrous, coarsely, uniformly, densely, 

 deeply punctate, intervals finely granulose. 



Elytra at base slightly wider than pronotum at middle, one and three-fourths 

 times as long as wide ; sides nearly parallel from humeral angles to apical 

 third, then arcuately converging to tips, which are conjointly broadly rounded; 

 lateral margins coarsely serrate posteriorly; basal depressions broad and mod- 

 erately deep ; humeral depressions vaguely indicated ; disk moderately convex, 

 with a broad depression on each side near middle, without distinct longitudinal 

 costae or f oveae ; surface glabrous, coarsely, densely punctate, more or less 

 transversely rugose near base and lateral margins, intervals densely granulose. 



Abdomen beneath coarsely, sparsely, irregularly punctate, more densely on 

 last sternite, sparsely clothed- with short, recumbent, white hairs, without lat- 

 eral callosities, intervals finely granulose ; last visible sternite bisinuate at apex, 

 lateral angles acutely produced, and with a strongly elevated, very coarsely 

 serrate, submarginal ridge, surface broadly depressed at middle, but lateral 

 margins not serrate ; eighth tergite convex, » coarsely, confidently punctate, 

 broadly rounded at apex. Prosternum declivous' along anterior margin, coarsely, 

 densely punctate, with a few, short, recumbent, whitish hairs ; anterior margin 

 arcuately rounded, with a short, wide, median lobe. Anterior femur with a 

 large, acutely triangular tooth, which is coarsely dentate on outer margin. 

 Anterior tibia slightly arcuate, unarmed at apex; middle and posterior tibiae 

 straight. 



Length 9 mm., width 3.8 mm. 



Redescribed from a female topotype, No. 3449, from San Jose del 

 Cabo, Lower California, in the Academy of Natural Sciences of 

 Philadelphia. 



