LIFE HISTORY OF CARPENTER ANT. 



I8 5 



Table III. 



Large Colonifs of C. pennsylvanicus. 



Table IV. 



Large Colonies of C. ferrugineits. 



5. In the trees of the block in which I live are eleven colonies 

 of C. pe7insylvanicns. These colonies were observed almost daily 

 after the first week of July until they ceased their activities with 

 the approach of cold weather. Between July 18 and August 12 

 one of them, a very large colony, was seen daily to carry empty 

 queen pupa cases from the nest. All the other ten colonies were 

 watched carefully during this period, but only worker pupa cases 

 were ever seen about them. The queens which were reared in 



1 The numbers in this colony are only estimated, as the ants were too active to 

 permit of an accurate count. 



