LEAFHOPPERS OF MAINE. 159 



The delicate white cast nymphal skins adhere to the leaves and are 

 A sure indication of the presence of the insect even if adults or living- 

 nymphs are not seen. On Aug. 2nd, when observations were made 

 only adults and nymphal skins were observed. The young develop 

 during the early summer and it is supposed that adults pass the winter 

 hidden among dead leaves and other rubbish at the surface of the 

 ground. Where the insect becomes troublesome a kerosene emulsion, 

 or tobacco decoction spray may be used. Specimens apparently belong- 

 ing here have been taken also from the witch hazel. 



