Genus Thecla 
pale lines, and having a diamond-shaped shield back of the 
head. The chrysalis is thick and conformed to the generic type 
of structure. The color is pale green, striped and dotted with 
pale yellow on the abdomen. The caterpillar feeds in the Yosem- 
ite Valley upon the young leaves of the live-oak (Quercus chryso - 
lepis). 
The insect is found in California and Nevada. 
(2) Thecla crysalus, Edwards, Plate XXIX, Fig. 11, $ (The 
Colorado Hair-streak). 
Butterfly .—The wings on the upper side are royal purple, 
broadly margined with black. On the fore wings a broad 
oblique black band runs from the middle of the costa to the mid¬ 
dle of the outer margin. At the inner angles of both wfrigs are 
conspicuous orange spots. On the under side the wings are 
fawn, marked with white lines edged with brown. The orange 
spots reappear on this side, but at the anal angle of the hind 
wings are transformed to red eye-spots, pupiled with black and 
margined with metallic green. The hind wings are tailed. Ex¬ 
panse, 1.50 inch. 
The variety citima, Henry Edwards, differs in being without 
the orange spots and having the ground-color of the under side 
ashen-gray. Specimens connecting the typical with the varietal 
form are in my possession. 
Early Stages. — Unknown. 
Found in southern Colorado, Utah, Arizona, and southern 
California. 
(3) Thecla halesus, Cramer, Plate XXIX, Fig. 9, 6 (The 
Great Purple Hair-streak). 
Butterfly .—The hind wings have a long tail, and are lobed at 
the anal angle. The wings are fuscous, iridescent bluish-green 
at the base. The body is bluish-green above. On the under side 
the thorax is black,spotted with white,the abdomen bright orange- 
red. The wings on the under side are evenly warm sepia, spotted 
with crimson at their bases, glossed with a ray of metallic green 
on the fore wings in the male sex, and in both sexes splendidly 
adorned at the anal angle by series of metallic-green and iridescent 
blue and red spots. Expanse, 1.35-1.50 inch. 
Early Stages. — All we know of them is derived from the draw¬ 
ings of Abbot, published by Boisduval and Leconte, and this is 
but little. The caterpillar is said by Abbot to feed on various oaks. 
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