Male pale blue on upper side; female darker, the hind wings with a submarginal row of orange crescents pupilled with black. Expanse 1.00-1.25 inch.

Ranges from the Rocky Mountains to the Pacific in British America and southward as far as Colorado.

(7) Lycæna comyntas (Godart), [Plate XCIII], Fig. 3, ♂; Fig. 4, ♀ (The Eastern Tailed Blue).

Somewhat closely resembling the preceding, but appreciably smaller. Expanse 1.00-1.10 inch.

Ranges from the Saskatchewan to Costa Rica, and from the Atlantic to the Rocky Mountains.

(8) Lycæna isophthalma Herrich-Schäffer, [Plate XCIII], Fig. 5, ♀ (The Dwarf Blue).

Light brown above in both sexes, with a row of dark spots on outer margin of hind wings; below pale brown profusely marked by light spots and bands, the dark marginal spots of the upper side reappearing, and defined by circlets of metallic scales. Expanse 0.75 inch.

Found in the Gulf States and the Antilles.

(9) Lycæna exilis Boisduval, [Plate XCIII], Fig. 6, ♂ (The Pygmy Blue).

The smallest of North American butterflies, closely resembling the foregoing, but distinguished by the white spot on fringe near inner angle of fore wing, and the white fringes of the same wing near apex. Expanse 0.65 inch.