ECOLOGY — INTERPRETATION OF ENVIRONMENT 331 



in a wet pasture. One of them laid her eggs indoors in a leaf 

 of the goldenrod. She laid them, one at a time, in the edge 

 of a leaf between the two layers of epidermis. She first made 

 a pocket with her blade-like ovipositor, slitting the leaf open 

 at the edge, of sufficient depth to accommodate the egg. Then 

 the thin, flat egg was deposited, and when thus inserted, it 

 caused the spot to appear like a blister slightly raised at this 

 point, and could be easily seen when held against the light, 

 as shown in the tail-piece illustration. 



The eggs, which measure about two and one-third mm. 

 wide by five and one-half in length, are laid in an oblique 

 direction, being slightly curved; the posterior pole points in 

 the direction of the base of the leaf. I found that one female 

 laid fifteen eggs up to the time I had last observed her, from 

 one to three eggs being laid in each side of a leaf. They were 

 disposed quite near together, and nearly equal distances 

 apart, when two or more were laid. The leaves drop to the 

 ground in the fall, and the eggs remain there throughout the 

 winter and hatch in the early summer. This species is per- 

 petuated through the winter in the egg state, the young hatch- 

 ing some time in June. The young, which scatter about 

 after hatching, are rarely seen until they attain considerable 

 size, owing to the protection afforded by their harmonious 

 green coloring. 



