BUTTERFLIES OF MONTANA. 85 



Under side paler, yellowish brown zephyrus. 



More decided markings than the last satyrus. 



Under side pale purplish gray hylas. 



Under side very dark, paler irrorations silenus. 



THE FAUN. 



Polygonia faunus Edwards. Fig. 68. 



Fig. 68. Polygonia faunus. 



Butterfly Upper surface fulvous, dark, the hind wings darker. Next 

 the apex of the fore wings, the base of both wings, and the inner margin 

 of hind wings dusky. Border of wings broad and dark brown or black, 

 in the fore wings dentate at the apex, and bordered within by a series 

 of sub-obsolete tawny lunules. There are two spots and a bar in the cell, 

 and a bar at the end, but there are only three round spots between the 

 cell and the posterior angle, the lowest supplemented by a shade above it. 

 The spots are very dark or black. 



Hind wings with dark ferruginous next the border, shading toward 

 the middle, a series of paler spots next the border and an irregular roof 

 of black spots across the middle. 



Under side of both wings dark brown on the base, with an irregular 

 common blackish band across the middle, darkest on its outer edge and 

 within the abdominal margin, where its outline is obliquely serrated. 

 Beyond this band the color is pale brown mottled with grayish white, 

 which is clearest on the fore wings. The whole surface is clouded with 

 vinous, and more or less crossed by fine abbreviated streaks of brown. 

 Apex of fore wings yellow-brown, with three small lanceolate ferrugin- 

 ous spots, the lower enclosing a blue or green point. The outer margin 

 of both wings, below these, is bordered by a series of confluent blue-black, 

 sometimes olive-green spots following the outline of the wing. Within 

 these is another series of rounded spots of the same color. On the disk 

 of the hind wings is a white G varying in form. 



Early Stages The mature larva is one and a quarter inches long; 



