EMERGENCE FROM HIBERNATION, 1907. 



69 



records now at hand indicate that emergence may take place when- 

 ever the mean average temperature exceeds 55° F. It is certain 

 that weevils may be active at a temperature considerably lower 

 than this, but the records do not indicate that there is a general 



emergence from hibernation at a lower temperature. After having 

 left their winter quarters, weevils may continue active at considerably 

 lower temperatures than are required to draw them out from their 

 shelter. This statement may, in part at least, explain the continued 



