392 



JOURNAL OF ECONOMIC ENTOMOLOGY 



[Vol. 6 



first tree-cage as follows: May 25-29, 27-28; 28-30; 29-6; 30-15; 31-7; 

 June 1-13; 2-12; 4-4; 6-8; 7-4; 10-1; 11-4; 14-2. 



The first eggs appeared on May 27 and the last were found on July 

 4. The first worminess became evident on June 4, and the maximum 

 (using this term to mean one-half of all that appeared) worminess was 

 reached between June 24 and 28. The first of the 1123 larvae that 

 came from this tree appeared under the bands on June 24, the maxi- 

 mum was reached by July 5 and the last emergence came July 31, 

 Pupation of these larvae began on June 26, reached the maximum July 



Fig. 8. Chart representing the number of separate pupation periods as shown by 

 cage and field studies in 1912. The pupation of overwintering brood in the orchards 

 was represented by too small a number to render the construction of a curve worth 

 while. 



10 and ceased August 11. All larvae either transformed or died- 

 Emergence of adults began July 5, reached the maximum July 23 

 and ceased August 21. 



Three hundred and seventy-six of the moths which emerged from 

 the first tree-cage were introduced into the second tree-cage as fol- 

 lows: July 5-9; 6-10; 7-17; 8-18; 9-17; 10-12; 11-20; 12-27; 13-40; 



