♀.--The female is much like the male, but on the hind wings the ground-color from the base to the outer belt is brownish. Expanse, ♂, 3.00 inches; ♀, 3.30 inches.
This species, which is very closely allied to _A. coronis_, is found in Utah.
(29) =Argynnis callippe=, Boisduval, Plate XI, Fig. 1, ♂; Fig. 2, ♀; Fig. 3, ♀, _under side_ (Callippe).
_Butterfly,_.--This species may easily be recognized by the general obscuration of the basal area of the wings, the light-buff quadrate spots on the discal area of the fore wings, and the clear oval spots of the same color on the hind wings, as well as by the light triangular marginal spots, all standing out distinctly on the darker ground. The wings on the under side are quite pale buff, with the spots large and well silvered. Expanse, 2.30-3.00 inches.
(30) =Argynnis nevadensis=, Edwards, Plate X, Fig. 4, ♂, _under side_ (The Nevada Fritillary).
_Butterfly_, ♂.--The ground-color is pale fulvous, but little obscured with fuscous at the base. The outer margins are heavily bordered with black. The dark markings of the discal area are not heavy. The fore wings on the under side are pale buff, the spots well silvered; the hind wings are greenish; the belt is narrow and clear, and the spots are large and well silvered.
♀.--The female is much like the male, but larger and paler. The outer margin of the fore wings in this sex is more heavily marked with black, and the marginal spots are light buff in color. Expanse, ♂, 2.50-3.00 inches; ♀, 3.00-3.50 inches.
_Early Stages._--These remain to be discovered.
This species is found in the Rocky Mountains of Utah, Nevada, Montana, and British America.
(31) =Argynnis meadi=, Edwards, Plate XIV, Fig. 1, ♂; Fig. 2, ♂, _under side_ (Mead's Silver-spot).
_Butterfly._--This species is very closely allied to the preceding, of which it may be an extreme variation, characterized by the darker color of the fore wings on the upper side, the nervules being heavily bordered with blackish, and the deeper, more solid green of the under side of the wings. All the specimens I have seen are considerably smaller in size than _A. nevadensis_.
This species or variety is found from Utah northward to the province of Alberta, in British America.