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Atossa
Butterfly, female.--The upper side is bright yellowish-fulvous, with the wings at the base slightly dusted with brown. The margins of both wings are bordered by a single line, there being no trace of the outer line usually found in other species of the genus. The dark markings of the outer margin are almost entirely absent, and those of the discal and basal areas very greatly reduced. On the under side both wings are very pale, the spots entirely without silver, in some specimens even their location being but faintly in dicated. The fore wings at the base and on the inner margin are laved with bright red.
female.--The female resembles the male, except that the red on the under side of the fore wings is in many specimens very bright and fiery. Expanse, female, 2.50 inches; female, 2.75-3.00 inches.
Early Stages.--Entirely unknown.
This butterfly, which is still rare in collections, has been taken in southern California. It may be an extreme variation of the next species, A. adiante, Boisduval.