464 



PROCEEDINGS OF THE AMERICAN ACADEMY. 



In regard to the behavior of queens, it may be said that it was only 

 rarely that they shared in any of the activities described above, and 



then it was usually under 

 more or less exciting influ- 

 ences. This activity was, in 

 all probability, a reversion in 

 the case of dealated individ- 

 uals to the condition of the 

 queen when founding a col- 

 ony, and in the cases of 

 winged individuals to the 

 condition in the parental 

 nest (see Wheeler, tOB"). 



6. Conclusions in Regard to 

 Camponotus american us. 



From the foregoing account 

 it appears that : 



1. Males were never active 

 in the duties of the nest. 



2. The proportion of work- 

 ers occupied in any given 

 activity seems to be indepen- 

 dent of the number of indi- 

 viduals in the colony, when 

 the colony is as small as those 

 here studied. 



3. Queens, even when re- 

 taining their wings, may take 

 part in certain activities in 

 small colonies, although the 

 colony has reached such an 

 age as to contain all classes. 



4. A few individuals are 

 very constant in a certain 

 activity, or in even more than 

 one, the majority being much 

 less active. 



5. Some individuals are about equally concerned in two or more 

 activities. 



6. Too few individuals were available in making up Figures 12-14 to 

 show division of labor as clearly for this species as is seen in C. pictus 



Figure 19. 



