210 THE BUTTERFLIES OF THE 



or pale black along their hind margins ; the wing-cases 

 varying somewhat in shade. Dorsal side of abdomen 

 yellow- white, gray towards extremity ; ventral side al- 

 most wholly gray and brown ; dorsal appendage dark 

 smoky brown, with silvery corrugations before and after 

 it. The butterfly emerges from the chrysalis from June 

 to July. 



The food-plants are willow, aspen, basswood, and 

 probably thorn. 



Northern United States. 



74. Limenitis Disippus, Godt. 



Expanse of wings from 2.5 to 3 inches. 

 Upper surface fulvous, the lines black ; on the fore 

 wings a black triangular patch, containing three white 



Fig 



Limenitis Disippus, — right wings the under side (natural size). 



spots on the costa beyond the cell, continued to the pos- 

 terior angle in a narrow line. A black line crosses the 

 hind wings about two-thirds of the distance from the 

 base, as shown in Fig. 59. Outer border black, contain- 



