Genus Thecla 
wings are pale wood-brown, adorned by a black bar at the end 
of the cells, submarginal and median bands of small black spots 
surrounded with white, and on the secondaries by a submarginal 
series of red crescents diminishing in size from the anal angle toward 
the outer angle. Near the anal angle are two black spots separated 
by a broad patch of bluish-green scales. Expanse, i. 15-1.25 inch. 
Early Stages.— For a knowledge of what is known of these 
the reader may consult the pages of Scudder and Edwards. The 
caterpillar feeds upon willows. 
It is found all over the Northern States, ranging from Quebec 
to Vancouver’s Island. It seems to be very common on Mount 
Hood, from which I have a large series of specimens. 
(12) Thecla itys, Edwards, Plate XXIX, Fig. 17, ? (Itys). 
Butterfly .—The only specimen of this species known to me 
is figured in the plate. It is the type. Of its early stages nothing 
is known. It was taken in Arizona. Expanse, 1.25 inch. 
(13) Thecla edwardsi, Plate XXIX, Fig. 27, $ under side; 
Plate V, Fig. 29, chrysalis (Edwards’ Hair-streak). 
Butterfly .—Dark plumbeous-brown on the upper side, with a 
pale sex-mark on the fore wing of the male. On the under side 
the wings are paler and a trifle warmer brown, with their outer 
halves marked with numerous fine white broken lines arranged 
in pairs, with the space between them darker than the ground- 
color of the wing. The usual black spots, green scales, and 
red crescents are found near the anal angle on the under side. 
Early Stages. — For all that is known of these the reader will 
do well to consult the pages of Scudder. The caterpillar feeds 
on oaks. 
The species ranges from Quebec westward to Colorado and 
Nebraska, being found commonly in New England. 
(14) Thecla calanus, Hubner, Plate XXIX, Fig. 26, 6 ; Plate 
V, Figs. 25, 27, chrysalis (The Banded Hair-streak). 
Butterfly .—On the upper side resembling the preceding spe¬ 
cies very closely, but a trifle darker, and warmer brown. On 
the under side the wings are marked by fine white lines on the 
outer half, which are not broken, as in edwardsi, but form con¬ 
tinuous bands. Expanse, 1.15 inch. 
Early Stages .-The caterpillar feeds on oaks. The life-history 
is described with minute exactness by Scudder in “ The Butterflies 
of New England,” vol. ii, p. 888. 
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