120 CHARLES W. LENG. 



Habitat. — (Including all varieties) Hudson's Bay; Canada; Yu- 

 kon ; Wisconsin ; Nova Scotia ; Newfoundland ; White Mountains ; 

 Maine ; Montana ; Idaho ; Colorado ; Utah ; California ; Wyoming ; 

 Lake Superior ; Quebec ; A.lberta ; Manitoba ; Michigan ; extending 

 across the continent in Canada, and descending in the United States 

 as far south as Colorado in the mountains. 



Black, brown or green, maculate or immaculate, abdomen always 

 green, except in very dark specimens from Utah and in var. montana ; 

 head bald in front, broadly excavated between and above the eyes, by 

 which character this species may be identified ; interocular strise fine 

 and numerous; labrum very long, especially in the male, feebly 

 toothed (Schaupp says three toothed, but I can find only one in 

 many specimens) ; thorax trapezoidal, short, almost margined, ru- 

 gose, deeply impressed; elytra depressed near suture at basal fourth 

 and depressed shortly before the apex, granulate-punctate, near the 

 suture a row of faint large foveolse which are often missing especially 

 in the varieties. Pilosity above consists of a few upright set£e at the 

 sides of the thorax, on the scape of the antennae and beside the eyes ; 

 beneath distant erect hairs appear on the flanks of the prothorax, 

 the mouth parts and a few on the abdomen, but the insect is not 

 especially hairy. 



The markings of this species consist normally of humeral and post- 

 humeral dots, middle band entering perpendicularly from the margin 

 and bent at an obtuse angle, and a subapical dot. They vary in one 

 direction so that not even the faint middle band remains, and in the 

 other direction so that the humeral and apical lunule are not only 

 complete, but quite heavy and even connected at the margin. The 

 variations in color and marking are to some extent associated with 

 geographical distribution and indicate a number of genuine races. 

 These may be separated as follows : 



Elytra more slender and convex, without depression at basal third, vivid gi-een 



above, markings broad and distinct perviridis. 



Elytra more flattened with depression at basal third. 



longilabris and varieties. 

 Usually green beneath, rarely almost black. 



Black or dark brown, not heavily marked loiigilaliris. 



Bronze above, usually heavily marked LiHlireiitii. 



Coppery bronze above, feebly marked [ <»«ls»ri 



Bottle green above, feebly marked J ' 



Green or bronze, shining, immaculate • •* vesta I ia. 



Black beneath iiioiitaua. 



