278 
LEPIDOPTERA. 
brown between the zigzag band and the base ; and between 
tbe same band and the margin three black spots, behind the 
middle one of which is a rust-red spot with a black centre. 
The wings expand from 1 ZJ to 1 iV inch. This pretty species 
is found on the mouse-ear ( Crnaphalium plantagineum) in 
May, and on the flowers of the spearmint in August. 
Some kinds of Thecla have the hind edges of the wings 
notched, but not tailed. This is the case with the Niphon 
Fig. io 7 . butterfly ( Theda Niphon of Hiib- 
ner), (Fig. 107,) which has been 
taken at Sweet Auburn early in 
May. As in the Auburn butterfly, 
the wings are deep brown above, 
with a large rusty space on each ; 
the notches on their edges are white, and the teeth between 
them are rounded and of a' black color ; on the under side 
the wings are light brown, with dark brown wavy and zigzag 
lines, two of which are bordered on one side with white. 
The wings expand 1^ inch. 
The Mopsus butterfly ( Theda Mops us of Hiibner) differs 
from all the foregoing in having the hind wings entire and 
not tailed ; but the inner angle projects a little, as it does in 
some species of Lyccena. In form, and in the color and 
arrangement of the spots on the under side of the wings, 
it approaches to the Phlceas and Americana; but in these 
species the eyes are not downy, and the males have not the 
oval opaque spot near the front margin of the anterior wings. 
The Mopsus butterfly is dark brown above, with a row of 
seven or eight deep orange-colored spots near the margin of 
the hind wings, larger and much more conspicuous on the 
under than on the upper side. The wings beneath are light 
brown, with a row of deep orange or vermilion-colored spots 
near the hind margins of all the wings, an inner and more 
irregular row of small black spots encircled with white on 
the same, and two more similar spots close together on the 
middle of the hind wings. It expands lj^ inch. My only 
