The species is found in the Mohave Desert and southern California.

(3) Copæodes myrtis, Edwards, Plate XLVII, Fig. 11, ♂ (Myrtis).

Butterfly.—This diminutive little species may be readily recognized by the plate. The fore wings are somewhat broadly margined with dusky at the apex and along the outer margin; the hind wings on the costa are broadly and on the outer edge narrowly margined with dusky. On the under side the fore wings are blackish at the base. Expanse, .75 inch.

The only specimens of this butterfly that I have ever seen came from Arizona. The type is figured in the plate.

Genus ERYNNIS, Schrank

Butterfly.—The antennæ are short, less than half the length of the costa; the club is robust, with a very minute terminal crook; the palpi have the third joint minute, suberect, and bluntly conical. There is a discal stigma on the fore wing of the male.

Egg.—Somewhat spherical.

Caterpillar.—Feeds upon grasses, and is stouter in form than most hesperid larvæ, and sluggish in proportion to its stoutness. It does not make a nest, but conceals itself between the leaves of grass at the point where they unite with the stem, and is not very difficult to discover.

Chrysalis.—The chrysalis is elongated, cylindrical. Our knowledge of this stage is not very accurate as yet.