BUTTERFLIES. 23 
is also a narrow, white terminal line. The under side of the 
wings is very prettily marked, and is somewhat paler than 
the upper one. There are two short, whitish, parallel lines 
on the disk of the fore wings, and a whitish crenate line 
crosses the wing about half way between the last and outer 
borders, shadowed within by blackish; there is another 
broken, whitish line shaded on the outside with blackish, 
between the last line and the outer border. The under side 
ot the hind-wings have two short, whitish, discal lines with 
a blackish shade between them. A series of blackish spots, 
edged on either side with whitish, crosses the wing beyond 
the disk; and outside of this is a series of lunate, whitish 
spots, shaded on the outside with blackish, and faintly 
edged on the outside, below, with bluish-white. Along the 
anal angle the black streak is followed with orange. At the 
very apex of the anal angle there is a black spot with white 
on its upper side. On the next interspace is a patch of pow- 
dery blue scales, and in the next interspace to this is an 
orange crescent enclosing a black spot. The orange scales 
are also faintly visible in the next interspace. 
The caterpillar feeds on apple, oak, and other plants. 
The butterfly (Fig. 24, plate I1]) measures with expanded 
wings an inch and a quarter across. 
THE STREAKED THECLA. 
(Thecla strigosa Harr.). 
“Upper side of the wings dark brown and unspotted in 
the males, but the females sometimes have a fulvous spot 
near the anal angle of the hind-wing and are paler in color. 
The under side of the wings is pale reddish-brown. The 
outer part of both.wings is crossed by four, irregular, 
rather wavy, white lines, varying a little in individuals, but 
the two inner ones on the fore-wings ‘approach each other 
towards the hinder margin. The third is shorter than the 
