278 LEPIDOPTERA. 



brown between the zigzag band and the base ; and between 

 the 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^ to 1 T V inch. This pretty species 

 is found on the mouse-ear (Grnaphalium 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. 107. butterfly ( Tlieda 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 l inch. 



The Mopsus butterfly ( Thecla Mopzus 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 Lyc&na. In form, and in the color and 

 arrangement of the spots on the under side of the wings, 

 i* 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 liind wings. It expands l-j* ff inch. My only 



