Vol. xxx ! 



KNTOMOLodlCAI, NHWS. 



12 5 



surface of the soil, most of them bein- 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. 

 From 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 Zeitgophora scntellai ;'.v. 



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 



