Genus Erebia 
Chrysalis .— The chrysalis is formed about the roots of grass 
and on the surface of the ground, either lying loosely there or 
surrounded by a few strands of silk. The chrysalis is convex, 
both ventrally and dorsally, humped on the thorax, produced at 
the head; all the projections well rounded. The chrysalids are 
generally some shade of light brown or ashen-gray, with darker 
stripes and spots. This genus is arctic, and only found in the 
cooler regions of the North or upon elevated mountain summits. 
A few species range downward to lower levels in more temperate 
climates, but these are exceptional cases. 
(1) Erebia discoidalis, Kirby, Plate XXV, Fig. 19, $ (The 
Red-streaked Alpine). 
Butterfly. — Easily distinguished by the plain black wings, re¬ 
lieved by a reddish-brown shade on the disk of the primaries on 
the upper side. 
Early Stages. — Hitherto undescribed. 
This species is found in the far North. My specimens came 
from the shores of Hudson Bay. 
(2) Erebia disa, var. mancinus, Doubleday and Hewitson, 
Plate XXV, Fig. 23, $ (The Alaskan Alpine). 
Butterfly.— The wings are dark brown on the upper side. 
On the outer third below the apex are three or four black ocelli, 
broadly ringed with red and pupiled with white. The upper 
ocellus is generally bipupiled, that is to say, the black spot is 
twinned, and there are two small light spots in it. On the 
under side the fore wings are as on the upper side. The hind 
wings are broadly sown with gray scales, giving them a hoary 
appearance. The base is more or less gray, and there is a broad, 
regularly curved mesial band of dark gray, which in some speci¬ 
mens is very distinct, in others more or less obsolete. The 
female does not differ from the male, except that the ocelli on 
the fore wings are larger and more conspicuous. 
Early Stages. —Unknown. 
This species is found in Alaska and on the mountains of 
British Columbia. 
(3) Erebia callias, Edwards, Plate XXV, Fig. 20, $ (The 
Colorado Alpine). 
Butterfly .—Pale brown on the upper side, with a more or 
less indistinctly defined broad transverse band of reddish on the 
outer third of the fore wings. At the apical end of this band are 
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