(28) Thecla behri, Edwards, Plate XXX, Fig. 4, ♂; Fig. 5, ♂, under side (Behr's Hair-streak).
Butterfly.—Both sides are well displayed in the plate, and therefore need no particular description. Expanse, 1.10 inch.
Early Stages.—Unknown.
This species is found in northern California and Oregon, and eastward to Colorado.
(29) Thecla augustus, Kirby, Plate XXX, Fig. 15, ♁ (The Brown Elfin).
Butterfly.—Brown on the upper side; paler on the under side. The fore wings are marked by a straight incomplete median band, and the hind wings by an irregularly curved median band or line. Back of these lines toward the base both wings are darker brown. Expanse, .90 inch.
Early Stages.—These are not well known. Henry Edwards describes the caterpillar as "carmine-red, covered with very short hair, each segment involute above, with deep double foveæ." The chrysalis is described by the same observer as being "pitchy-brown, covered with very short bristly hair, the wing-cases paler." The food-plant is unknown.
This species is boreal in its haunts, and is found in New England and northward and westward into the British possessions.
(30) Thecla irus, Godart, Plate XXX, Fig. 12, ♂; Plate V, Figs. 32-34, chrysalis (The Hoary Elfin).
Butterfly.—Grayish-brown on the upper side. The wings on the under side are of the same color, paler on the outer margins, and darker toward the base. The species is subject to considerable variation. The variety arsace, Boisduval, has the hind wings marked with reddish near the anal angle, and the outer margin below marked with hoary-purple. The usual small crescentic spots appear on the outer margin of the hind wings, or they may be absent. Expanse, 1.10 inch.