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. 



(i) Erebia discoidalis, Kirby, Plate XXV, Fig. 19, 6 (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, 6 (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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