Genus Argynnis 
Egg .— Conoidal, with twelve to fourteen ribs, honey-yellow 
The caterpillars are hatched in the fall, and hibernate without feed¬ 
ing until the following spring. 
Caterpillar.- —The head is dark blackish-brown. The body 
is velvety-purple above, a little paler on the under side. The 
usual spines occur on the body, and are black, grayish at the 
base. The larva feeds on violets. 
Chrysalis. — The chrysalis is light brown, speckled, except on 
the abdominal segments, with black. 
This species ranges from Maine to the mountains of western 
Pennsylvania, and thence southward along the central ridges of 
the Alleghanies into West Virginia. It is also found in Canada, 
and extends westward into the region of the Rocky Mountains. 
It is especially common in the White Mountains of New Hamp¬ 
shire and the Adirondacks. 
(12) Argynnis lais, Edwards, Plate XIV, Fig. 12, & ; Fig. 
13, ? (The Northwestern Silver-spot). 
Butterfly. —The male is bright reddish-fulvous on the upper 
side, slightly obscured by fuscous at the base. The discal band 
of spots common to both wings is broken and irregular, and the 
spots on the hind wings are quite small. The fore wings on the 
under side are buff at the tips and pale red at the base and on 
the inner margin, lighter at the inner angle. The under side of 
the hind wings as far as the outer margin of the discal row of 
silvery spots is dark brown, mottling a yellowish ground. The 
submarginal band of the hind wings is pale yellow and moder¬ 
ately broad. The female is marked much as the male, but the 
discal band of spots on the upper side of the fore wings is con¬ 
fluent and broader, the fringes whitish, and the spots included 
between the sagittate marginal spots and the marginal lines paler 
than in the male sex. Expanse, 2.00-2.20 inches. 
Caterpillar , etc. — The early stages are unknown. 
This species is found in the territories of Alberta and Assini- 
boia, and in British Columbia among the foot-hills and the lower 
slopes of the mountain-ranges. 
(13) Argynnis oweni, Edwards, Plate XII, Fig. 5, 6 ; Fig. 
6 , , under side (Owen’s Silver-spot). 
Butterfly , $ .—The wings on the upper side are dull reddish- 
fulvous, not much obscured with brown on the base, the black 
markings moderately heavy, the two marginal lines tending to 
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