JOURNAL OF ECONOMIC ENTOMOLOGY 



Plate 10 



1. Metellus rubi, egg blister, one opened to 

 show the egg and the one at the right intact. 



2. Nymphs of the Woolly Aphid, Schizoneura lanigera 

 {americana), on mountain ash, Pyrus americana, — the immedi- 

 ate progeny of migrants from elm leaf curl. Photographed at 

 Orono, June 28, 1912. 



