Butterfly, ♂.—Closely resembling A. eurynome, Edwards, from which species it may be at once distinguished by the entire absence of silvery scales upon the under side of the wings, and also by the fact that the silver spots on the under side of the hind wings are not compressed and elongated as much as in eurynome, and by the further fact that all the dark marginal markings of the under side are obliterated.
♁.—The female does not differ materially from the male, except that the dark markings on the upper side are all much heavier, standing out very distinctly upon the paler ground, and the marginal spots within the lunules are very light in color and relatively large. On the under side the fore wings are laved with red, very much as in the female of A. adiante. Expanse, ♂, 1.75-2.00 inches; ♁, 2.00-2.15 inches.
Early Stages.—These still remain to be ascertained.
This interesting butterfly, which seems to indicate a transition between the butterflies of the Adiante-group and those of the Eurynome-group, has been found in Colorado, Nevada, Utah, and Arizona.
(42) Argynnis clio, Edwards, Plate XIV, Fig. 5, ♂; Fig. 6, ♁; Fig. 7, ♂, under side (Clio).
Butterfly.—Closely resembling A. eurynome and A. artonis. Like artonis, the spots on the under side of the wing are without silver. The female very closely resembles the female of artonis, and in fact I am unable to distinguish the types of the females of the two species by any marks which seem to be satisfactory. Expanse, ♂, 1.75 inch; ♁, 1.75-1.90 inch.
Early Stages.—Unknown.
This species, which is as yet comparatively rare in collections, is found in Montana and the province of Alberta, in British America, at a considerable elevation.
(43) Argynnis opis, Plate XIV, Fig. 8, ♂, under side (Opis).
Butterfly.—This species, which apparently belongs to the Eurynome-group, appears by the location of its markings to be closely related to eurynome, but on the upper side the wings of both the male and female are more heavily obscured with fuscous at the base; the dark markings are heavier than in eurynome, and in both sexes it is smaller in size, being the smallest of all the species of the genus thus far found in North America. The spots on the under side of the wings are none of them silvered. Expanse, ♂, 1.50 inch; ♁, 1.60 inch.