ARGYNNIS I. 



edo-ed with black ; a dash at base of cell, and another at base of subcostal inter- 

 space ; the shoulder and inner margin silvered. 



Body above fulvous, beneath buft"; legs bull'; palpi buff, fulvous above and at 

 tip ; antenna^ black, annulated with grayish above, fulvous below ; club black, tip 

 ferruginous. 



Female. — Expands 2 inches. 



Color paler, the spots in the sub-marginal lunules sordid white ; the mai'ginal 

 bands broader and all the markings heavier ; the second row of silvered spots 

 indicated above by a shade lighter than the ground ; the basal area of primaries 

 beneath deep colored. 



Occasionally an example of either sex is seen in which is no silvering, all the 

 spots then being of nearly the same color as the ground. 



EoG. — Conoidal, broad at base, truncated at sununit ; marked by numer- 

 ous horizontal striae, and vertically b}' about twenty prominent ribs, some of 

 which are intersected by shorter ribs which proceed from tlie base and connect 

 at about two thirds the distance to the summit; color at first lemon-yellow, soon 

 turning to purple. Deposited upon Viola. 



Larva unknown. 



From Colorado and the Rocky Mountains. Mr. T. L. Mead found this species 

 common throughout the northern sections of the State, in 1871, " flying among 

 the grasses and along the streams. It began to appear at Fairplay, 6th June, 

 and was especially abundant at Twin Lakes." I have also received specimens 

 from Dr. Hayden's Colora<lo expedition, and one or two from Montana. These 

 last were erroneously mentioned by me in the Reports of the Geological Survey 

 of Montana, 1871, as Mont'waga, Behr, a species, so far as I know, confined to 

 the Pacific coast. I have seen Eurynome in no collection from Utah, nor from 

 Arizona, or New Mexico. It would seem to be strictly a mountain species, most 

 abundant in Colorado, and to be found more or less through the territories 

 adjoining on the north. 



