Genus Argynnj? 
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, S , 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, S, 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. n, <3 ; Fig. 
14, $, under side; 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 ca^e 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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