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 two black ocelli, pupiled with white. The fore wings on the under side are reddish, with the costa and outer margin grayish. The ocelli on this side are as on the upper side. The hind wings are gray, dusted with brown scales and crossed by narrow, irregular, dark-brown subbasal, median, and submarginal lines. _Early Stages._--Unknown. This species is not uncommon on the high mountains of Colorado and New Mexico. It is regarded as a variety of the European _E. tyndarus_, Esper, by many. All the specimens of _tyndarus_ in my collection, and there are many, lack the ocelli on the fore wing, or they are very feebly indicated on the under side. Otherwise the two forms agree pretty closely. (4) =Erebia epipsodea=, Plate XXV, Fig. 28, ♂ (The Common Alpine). _Butterfly._--The wings are dark brown on the upper side, with four or five black ocelli, pupiled with white and broadly surrounded by red near the outer margin of the fore wings, and with three or four similar ocelli located on the upper side of the hind wings. The spots on the upper side reappear on the under side, and in addition the hind wings are covered by a broad curved median blackish band. _Early Stages._--These have been carefully described by Edwards in "The Butterflies of North America," vol. iii, and by H.H. Lyman in the "Canadian Entomologist," vol. xxviii, p. 274. The caterpillar feeds on grasses. The species ranges from New Mexico (at high elevations) northward to Alaska. It is common on the mountains of British Columbia. (5) =Erebia sofia= Strecker (=ethela=, Edwards), Plate XXV, Fig. 18, ♀ (Sofia). _Butterfly._--Dark brown on the upper side, with an even submarginal band of red spots on the primaries, and five similar spots on the secondaries, the last two of the latter somewhat distant from each other and from the first three, which are nearer the outer angle. On the under side the primaries are reddish, with the submarginal band as on the upper side, but paler. On the secondaries, which are a little paler below than above, the spots of the upper side are repeated, but they are yellowish-white, standing forth conspicuously upon the darker ground-color. _Early Stages._--Hitherto undescribed. _Sofia_ has been found at Fort Churchill in British America, in the Yellowstone National Park, and in a few localities in Colorado. It is still rare in collections. The figure in the plate is that of the female type of Edwards' _ethela_, _ethela_ being a synonym for _sofia_. (6) =Erebia magdalena=, Strecker, Plate XXV, Fig. 17, ♂ (Magdalena). _Butterfly._--Uniformly dark blackish-brown on both sides of the wings, with no spots or markings.