NORTH AMERICAN LEPIDOPTERA. 331 



Group LEVIS. 



The species referable here have a peculiar fascies at once recog- 

 nizable. The fringes are unusually long and even on both wings, 

 the secondaries with rather well defined dark outer margins. The 

 maculation of primaries is all distinct, the lines being geminate and 

 defined, the s. t. line more or less punctiform and preceded by ir- 

 regular black spots. The ordinary spots are well defined and marked 

 by paler annuli ; the color is gray, with a more or less evident lute- 

 ous admixture. 



Levis has a distinct yellowish shade to secondaries, and a deeper 

 shade to primaries than the other species. The orbicular is oblique, 

 oval, the reniform discolored and prominent. The species is very 

 readily distinguished from the others by these characters. 



Simplex lacks the distinct yellow shades, the orbicular is oval, but 

 not oblique, the reniform concolorous, the spots preceding s. t. line 

 are very distinct and sagittate. 



Augushis has the orbicular round. It is a more distinctly cinere- 

 ous species and the reniform is concolorous. The spots preceding 

 s. t. line are not so prominent as in the preceding species. 



Irrespective of all other characters the orbicular in these three 

 species affords a safe distinguishing feature. It is oblique in levis, 

 oval in simplex, and round in augustus. 



Tricolor is at once obviously distinct from all the preceding by the 

 very prominent and beautiful metallic shade to the dark blue scales 

 of the primaries. 



In brief the species are separable as follows : 



Secondaries with a decided yellowish shade; orbicular oblique, oval, reniform 



discolored levis. 



Secondaries without the yellowish tinge, smoky or dirty white. 



Reniform concolorous, orbicular oval, not oblique simplex. 



Reniform concolorous, orbicular round; color more cinereous augustus. 



Primaries marked and shaded with metallic dark blue scales iricolor. 



O. levis Grt., Can. Ent. 1880, xii, 254. 



Head, thorax and primaries dusty ochery with paler shadings. Primaries 

 with the maculation distinct, neatly marked. Basal line distinct, geminate, 

 inner line black, the outer fuscous, included space somewhat paler. A palei 

 shade through the superior portion of basal space, variably distinct in the speci- 

 mens at hand. T. a. line geminate, inwardly oblique from the costa, strongly 

 and rather irregularly dentate ; a narrow black line connecting it with the basal 

 line. T. p. line geminate, inner line black, outer line somewhat incomplete, 

 fuscous, included space paler, somewhat lunulate, a wide outward bend over 

 reniform, and somewhat incurved below that spot. The claviform is distinct. 



