_Butterfly._--The plate gives a good idea of the upper side of the wings in both sexes. On the under side the fore wings are pale gray in the male and pale red in the female, with the outer margin lavender. The spots of the upper side reappear on the disk. The hind wings on the under side are purplish-gray on the inner two thirds and paler gray on the outer third, with many black spots on the disk, margined with white. Expanse, 1.10-1.25 inch. _Early Stages._--These have been partially described by Dyar in the "Canadian Entomologist," vol. xxiii, p. 204. The caterpillar feeds on the wild gooseberry (_Ribes_). _Arota_ is a Californian species. (2) =Chrysophanus virginiensis=, Edwards, Plate XXVIII, Fig. 23, ♂; Fig. 24, ♀ (The Nevada Copper). _Butterfly._--Allied to the preceding species, but easily distinguished by the submarginal white bands of crescent-shaped spots on the under side. These are particularly distinct on the hind wings. Expanse, 1.25-1.30 inch. _Early Stages._--Unknown. _Virginiensis_, so named because the first specimens came from Virginia City, ranges in California, Nevada, and Colorado. (3) =Chrysophanus xanthoides=, Boisduval, Plate XXVIII, Fig. 29, ♂; Fig. 30, ♀ (The Great Copper). _Butterfly._--The student will easily recognize it by its larger size, it being the largest species of the genus in North America, and by its creamy-white under surface, spotted with distinct small black spots, in large part reproducing the spots of the upper side. Expanse, 1.50-1.65 inch. (4) =Chrysophanus editha=, Mead, Plate XXVIII, Fig. 26, ♂; Fig. 27, ♀ (Editha). _Butterfly._--This is a much smaller species than the last, which it somewhat resembles on the upper side. On the under side it is wholly unlike _xanthoides_, the wings being pale pearly-gray, pale ochreous on the outer margins, the spots of the fore wings black and of the hind wings ochreous, narrowly margined with white or fine black lines. Expanse, 1.10-1.25 inch. _Early Stages._--Entirely unknown. This species is found in Nevada. (5) =Chrysophanus gorgon=, Boisduval, Plate XXVIII, Fig. 35, ♂; Fig. 36, ♀ (Gorgon). _Butterfly._--Somewhat like the preceding species, but with the fore wings of the male redder on the upper side, and of the female more broadly mottled with pale red, the spots in some specimens inclining to buff. The under side of the wings is white, marked with the usual series of black spots. The secondaries have a marginal series of elongated pale-red spots, tipped at either end with black. Expanse, 1.25-1.30 inch. _Early Stages._--We as yet know nothing of these. _Gorgon_ is found in California and Nevada. (6) =Chrysophanus thoë=, Boisduval, Plate XXVIII, Fig. 31, ♂; Fig. 32, ♀; Plate V, Fig. 50, _chrysalis_ (The Bronze Copper).