Butterfly, ♂.—The wings on the upper side are dull fulvous, greatly obscured by brown at the base of the wings. The dark spots and markings are not heavy. The fore wings on the under side are yellowish-fulvous at the base and on the inner half of the wing; the apical patch and the nervules on the apical area are heavy ferruginous; the marginal spots are buff, with no silver. The hind wings on the under side are light ferruginous, mottled with buff; the belt is broad, clear buff; the outer margin is brown. All the spots are small and imperfectly silvered.
♁.—The female is nearly the same shade as the male, with the marginal spots on the under side always silvered, the remainder without silver, or only now and then with a few silvery scales. Expanse, 2.25-2.50 inches.
Early Stages.—Not ascertained.
This species occurs in southern Utah and Arizona.
(26) Argynnis platina,, Skinner, Plate XVIII, Fig. 7, ♂ (Skinner's Fritillary).
Butterfly, ♂.—The original description of this species, contained in the "Canadian Entomologist," vol. xxix, p. 154, is as follows:
"♂.—Expands two and a half inches. Upper side: Rather light tawny or even light buff. Black markings dense and wide, with outer halves of wings looking rather clear or open, with rows of round spots not very large; marginal border light; bases of wings not much obscured. Under side: Superiors have the two subapical silver spots and silver spots on margin well defined; color of inner half of wing rosy. The silver spots on the inferiors are large and well defined, and placed on a very light greenish-gray ground. The intermediate buff band is well defined, comparatively wide, and very light in color. ♁.—The ground-color on the inferiors below is reddish-brown in the female."
Early Stages.—Unknown.
This species occurs in Utah and Idaho, and is possibly a varietal form of A. coronis, specimens agreeing very nearly with the type figured in the plate being contained in the Edwards collection under the name of A. coronis.