Butterfly.—On the upper side uniformly brown. On the under side dark, with a narrow submarginal and an irregular median transverse band, and a pale short bar closing the cell on both wings; a black spot at the anal angle of the secondaries, preceded by a few bluish-green scales. Expanse, 1.00-1.10 inch.
Early Stages.—Unknown.
Habitat, California and Utah.
(17) Thecla sæpium, Boisduval, Plate XXIX, Fig. 33, ♂; Fig. 34, ♁ (The Hedge-row Hair-streak).
Butterfly.—Almost identically like the preceding species, except that the wings on the upper side are a trifle redder, on the under side paler; the lines on the under side of the wings are narrowly defined externally by white, and the anal spots are better developed and defined on the hind wings. Expanse, 1.20 inch.
Early Stages.—Unknown.
This species is found throughout the Pacific States, and I am inclined to believe it identical with chalcis. If this should be proved to be true the latter name will sink as a synonym.
(18) Thecla adenostomatis, Henry Edwards, Plate XXIX, Fig. 25, ♂ (The Gray Hair-streak).
Butterfly.—Mouse-gray on the upper side, with a few white lines on the outer margin near the anal angle; hoary-gray on the under side, darker on the median and basal areas. The limbal area is defined inwardly by a fine white line, is paler than the rest of the wing, and on the secondaries is marked by a full, regularly curved submarginal series of small dark lunules. Expanse, 1.30 inch.