♀.--The female is very much like the male on the upper side, but the ground-color is paler. On the under side the wings are somewhat paler, and all the spots and light markings, especially on the secondaries, are far more conspicuous, being bright yellow, and standing out very prominently upon the dark ferruginous ground. Expanse, 1.40 inch. _Early Stages._--The early stages of this insect are not as yet known. _Helena_ appears to be a common species in Colorado, Montana, and New Mexico. It is subject to considerable variation, both in the intensity of the coloring of the under side of the wings, and in the distinctness of the maculation. (4) =Brenthis montinus=, Scudder, Plate XV, Fig. 7, ♂; Fig. 8, ♀, _under side_ (The White Mountain Fritillary). _Butterfly_, ♂.--The upper side is fulvous, closely resembling _B. chariclea_, but the ground-color is darker. The under side of the hind wings is deep ferruginous, mottled with white, the most conspicuous of the white spots being a white bar occurring at the end of the cell, and a small round white spot at the base of the wing. The hind wings have also a marginal row of slightly silvered white spots. ♀.--The female is very much like the male, but the ground-color of the upper side is paler. Expanse, ♂, 1.50 inch; ♀, 1.75 inch. This interesting butterfly is found on the barren summits of Mount Washington, New Hampshire. It represents the survival of the arctic fauna on these desolate peaks, and, like the arctic flora of the spot where it is found, is a souvenir of the ice-age, which once shrouded the northeastern regions of the United States with glaciers. (5) =Brenthis chariclea=, Schneider, Plate XV, Fig. 4, ♂ (Chariclea). _Butterfly_, ♂.--Fulvous on the upper side, with heavy black markings, both wings greatly obscured at the base by fuscous. On the under side the fore wings are pale yellowish-fulvous, mottled with ferruginous at the tip and on the outer margin. The hind wings on the under side are dark purplish-ferruginous, mottled with yellow, crossed by a central row of conspicuous yellow spots. The row of marginal spots and two or three small spots at the base are white, slightly silvered. ♀.--The female differs from the male in having the markings of the upper side darker and heavier, and the outer margins more heavily marked with black, and having all the spots on the under side more distinctly defined against the dark ground. Expanse, ♂, 1.50 inch; ♀, 1.75 inch. _Early Stages._--Undescribed. This species, like _B. freija_, is circumpolar, being found in Lapland, Greenland, and throughout arctic America. It also occurs within the limits of the United States, in the Yellowstone Park at considerable elevations, and is not uncommon on the high mountains in British Columbia, numerous specimens having been captured in recent years about Banff and Laggan, in Alberta. (6) =Brenthis boisduvali=, Duponchel, Plate XV, Fig. 5. ♂; Fig. 6, ♀, _under side_ (Boisduval's Fritillary).