369 



Table Xllld. First lot of hibernated generation pupae. 1920, at approximately 

 constant temperature, including tests of air movement and evaporation. 



for 



85° and 



Max. and Min. temp, any day were respectively, 68° and 61° 

 81° F. for B. 



Pupal life in 80% cases for BW15 and BW25, was 9.5-10.5 days respectively. 



Long-est and shortest pupal life for AWWii, ADBac, BW15, BW 25, was 29 and 

 22, 24 and 27, 11 and 7, 10.5 and 9.5 days respectively. 



(?) indicates that length of pupal life was not ascertained. 



(•) Some pupae at beginning. 



