86 



BULLETIN UNIVERSITY OF MONTANA. 



head black, with two branching horns and a few scattered white hairs. 

 Upper side of joints 2 to 6 brick-red, stripped transversely with blue, 

 yellow and black, a few white hairs on joint 2. There are four branching 

 yellow spines, with black tips, on joints 3 and 4, and six on joints 5 and 6. 

 Joints 7 to 12 are white, with a faintly marked black stripe along the 

 back, each joint with three transverse yellow bands and two oblique 

 black spots. These joints have each seven spines, all white except the 

 one next the lowest, which is brown. Last two joints black, with seven 

 and four spines respectively. Sides red, with two black bands, the lowest 

 spotted with blue. 



The chrysalis is grayish brown Head with two bi-forked horns, the 

 outer point very short; thorax with an elevated keel-like ridge on top, 

 with a small tubercle on each side 



The food plants are gooseberry, currant, willow and birch. 



Distribution — It is found from New England south to the Carolinas 

 and west to the Pacific. 



The collection at the University embraces specimens from Missoula, 

 Sinyaleamin Lake, Flathead Lake, Swan Lake (many). 



At Swan lake, August 20, 1903, faunus was abnudant at Bond's cabin, 

 but was very hard to take. It was flying about the lake shore and around 

 the cabins of Bond and Groom, forest rangers, in common with Vanessa 

 J. album, Vanessa californica Polygonia satyrus and P. zephryus. 

 Although quite abundant comparatively few were taken. Brandegee has 

 taken it at Helena. 



Fig. 69. Polygonia faunus on the left, black satyrus in the middle, 

 zephyrus on the right, under side of wings. 



THE SATYR. 



Polygonia satyrus, Edwards. Fig. 69. 

 Butterfly — Expanse 1.75 to 2.00 inches, 45-51 mm. 

 above. Wings with dark brown, almost black border, 

 of lighter color than ground work within the black border. General color 

 much lighter than faunus. Inside of the lunules is a wash of reddish 

 brown, almost making a line across both wings, more conspicuous on 



Tawny or fulvous 

 A row of lunules 



