Genus Argynnis 



A. eurynome is a very common butterfly in Colorado, Mon- 

 tana, and British America, and is the representative of a con- 

 siderable group, to which the four preceding species belong, 

 if, indeed, they are not local races or climatic varieties of eury- 

 nome, a fact which can be demonstrated only by the careful 

 breeding of specimens from various localities. There is a fine field 

 here for study and experiment. 



(46) Argynnis montivaga, Behr, Plate X, Fig. 5, $ , under 

 side (Montivaga). 



Butterfly. — This species in both sexes very closely approxi- 

 mates the foregoing. The main points of distinction consist in 

 the somewhat darker red of the upper side of the wings, the 

 slightly heavier dark markings, and the absence on the under 

 side, especially of the hind wings, of the olive-green shade 

 which is characteristic of typical specimens of A. eurynome. 

 The mottling of the basal and median areas on this side is red- 

 dish-brown. The spots are more or less silvered on the under 

 side. Expanse, $, 1.75 inch; $, 1.90 inch. 



Early Stages. — Unknown. 



This species is found in the Sierras of California and among 

 the mountains of Nevada. 



(47) Argynnis egleis, Boisduval, Plate XIII, Fig. 13, $ ; Fig. 

 14, 9, underside; Fig. 15, ? (Egleis). 



Butterfly, $ . — The ground-color of the wings on the upper 

 side is deep fulvous, with rather heavy black markings. The 

 wings on the under side are pale fulvous, mottled with buff on 

 the subapical interspaces of the fore wings. The basal and discal 

 areas of the hind wings are mottled with brown, which in many 

 specimens is of a distinctly purplish shade. In some specimens 

 the inner half of the primaries is rather heavily laved with red. 

 The spots on the under side are either silvered or without silver, 

 in the latter case being pale buff. 



$ . — The female is much like the male, but paler. The red 

 on the under side of the primaries is deeper, and the purplish- 

 brown on the inner surface of the secondaries is also darker. 

 Expanse, $, 2.25 inches; $, 2.50 inches. 



Early Stages. — These remain to be ascertained. 



This is a common species in California and Nevada. For 

 many years it has been placed in all catalogues at the end of the 

 list of the species of this genus, where I also leave it, though to 



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