124 CASEY 



cupreous, the anterior parts with greenish patches, the elytra with the 

 broad sutural and marginal cupreous stripes suffusedly and gradually 

 disappearing internally, sometimes obliterating the medial blue or 

 green area by the resulting greenish-aeneous tint; under surface cu- 

 preous; head with densely compressed and longitudinally confluent 

 punctures, rather coarse ( $ ) or fine (J*), with a divdded and more 

 densely sculptured central spot, the surface feebly pubescent (9), or 

 densely and conspicuously so (c?); prothorax two-thirds to four-fifths 

 wider than long, trapezoidal, the sides but slightly arcuate; surface 

 only feebly impressed along the median line, strongly, sparsely punc- 

 tured medially and in a sublateral tumescent area toward base, elsewhere 

 densely punctate; elytra but little wider than the prothorax, sometimes 

 decidedly inflated behind the middle, two-thirds or more longer than 

 wade, the sides oblique posteriorly, the apices broadly rounded, becom- 

 ing transverse toward the feebly denticulate sutural angles; surface 

 with the low flat costae distinctly and rather closely but irregularly 

 punctate, the interv^ales very densely and evenly cribrate; under sur- 

 face pubescent and rather closely punctured (c?), or subglabrous and 

 more sparsely and finely punctate (9), the presternum impressed and 

 punctured medially. Length 14. 3-17.0 mm.; width 5.3-7.0 mm. New 

 York, Ontario, Michigan and Lake Superior (Bayfield and Whitefish 

 Point) impedita Say 



Body much more elongate and more parallel as a rule, always dark coppery- 

 brown, the median line of the elytra seldom with any decided greenish 

 tinge 14 



14 — Elytra gradually narrowed from but slightly behind the middle to the 

 apices, which are transversely truncate. Body elongate-suboval, 

 moderately convex, rather shining, dark brown with feeble cupreous-red 

 lustre, more pronounced on the elytral costae, the under surface bright 

 cupreous; head ( 9 ) as in the preceding, the eyes only moderate in size 

 and but slightly convex; prothorax two-thirds wider than long, strongly 

 trapezoidal, the sides broadly arcuate, becoming subsinuate broadly 

 toward base, the basal angles somewhat acute from above; surface only 

 very obsoletely impressed though more densely punctate along the 

 middle; punctures coarse and deep, disposed as in the preceding; 

 elytra fully four-fifths longer than wide, behind the middle two-fifths 

 wider than the prothorax, the external angles at apex obtuse but not 

 rounded, the sutural scarcely denticulate; surface with low flat punc- 

 tured costas, the intervales more coarsely and confusedly cribrate than 

 in the preceding, the second and third decidedly greenish in tinge; under 

 surface evidently though sparsely pubescent, finely, sparsely punctate, 

 more strongly but not densely so toward the sides of the abdomen, 

 the presternum impressed and closely punctured along the middle. 

 Length (9) 17.2 mm.; width 6.4 mm. Ontario (Georgian Bay). 



canadensis n. sp. 



Elytra more abruptly narrowed behind in barely apical third, the sides 

 scarcely becoming straight near the apices; intervales of the elytra 

 never greenish 15 



