Vol. xxx] 



ENTO.M()L()(ilCAL NEWS. 



125 



surface of the soil, most of them being at a depth of only one 

 or one and one-half inches. Many of these larvae had been in 

 the soil over one month and showed no signs of pupating. 

 I^>om this it seems likely that pupation takes place during the 

 spring. 



The larval mines are blackish, irregular and blotch-like, 



Poplar leaves showing larval mines and adult feeding of Zeiigophora scutellaris. 



many of them extending over an entire leaf surface. They 

 show more plainly on the upper surface, and as a rule only 

 faintly on the lower. Usually a mine contained one larva, but in 



