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 (Qiiercus cbryso- 

 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 wings 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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