SATYRIDiE. 
219 
their delicate structure, their lives are probably very short. There is 
considerable variation both between the sexes and between individ¬ 
uals of the same sex. The males are generally smaller than the 
Neonympha can thus. Female. 
females, and are darker in color. In the female there is usually a 
light yellowish .gray band on the upper side, which crosses the for¬ 
ward wing about one-third from the end, and the spots on both 
Neonympba cantlius. Female. Under side. 
wings are encircled with yellowish gray. These differences can be 
readily seen in the accompanying illustrations. The sizes of the eye- 
spots in individuals of the same sex often vary in a marked degree, 
even in specimens from the same locality. In some they show 
scarcely more than dots on the upper side, and in others they are 
large and prominent on both sides. 
The caterpillar feeds on grass. It is greenish and downy, and 
