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White Mountain Fritillary
Butterfly, male.--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.
Female.--The female is very much like the male, but the ground-color of the upper side is paler. Expanse, male, 1.50 inch; female,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.