394 



JOURNAL OF ECONOMIC ENTOMOLOGY 



[Vol.6 



14-35; 15-16; 16-10; 17-8; 18-63; 21-18; 22-11; 23-13; 24-8; 25-4; 

 26-6; 29-14. 



The first eggs of which we could be certain came July 6 and the last 

 about August 30. The maximum of worminess was reached between 

 July 21 and 24. The first of the 673 larvae appeared under the bands 

 on July 22, the maximum number by August 20, and they ceased com- 

 ing by September 21. Pupation of these larvae began July 27, reached 

 the maximum August 10 and ceased September 5; 48 per cent of the 

 larvae which emerged from this cage transformed, while 52 per ent 



Fig. 10. Chart representing the number of separate larval emergence periods as 

 shown by cage and field studies in 1912. 



entered the winter as larvae. Emergence of the moths began August 

 6, reached the maximum August 19 and ceased September 12. 



Seventy-seven of these moths were placed in the third tree cage as 

 follows: August 6-3; 7-1; 8-2; 11-2; 12-4; 13-5; 14-3; 15-3; 16-7; 

 17-9; 18-11; 19-10; 25-1; 26-2; 27-1; 29-2; September 1-3; 5-5; 6-2; 

 12-1. The first eggs appeared August 12, and the first evidence of 

 worminess was detected August 18. 



