ADOPTION OF QUEEN BY ALIEN SPECIES. 2Q7 



Aug. 14. The queen and callows are clustered together on the brood. 



Aug. 15. The queen is almost hidden from sight by the workers that are clustered 

 about her and over her. They are all resting on the pile of cocoons. 



Aug. 16. The same. 



Aug. 17. The same. Many of the workers licking her. 



Aug. 1 8. She is entirely hidden by the workers clustered over her. I have exam- 

 ined this nest every day up to the present time, September 12, and the 

 workers have always been clustered about her. This is much more pro- 

 nounced than is the case even with the rightful queen in a colony of ameri- 

 canus. There are now more than 100 workers in the nest. 



B. 19/13 Aug. 10. I place a beta queen of L. latipes in Petri dish with 30 workers 

 and about the same number of cocoons of L. interjectus. 



Aug. 11. Dead. I place in another alpha queen. 



Aug. 12. She is staying with the workers on the pile of cocoons and seems to be 

 perfectly at home. 



Aug. 13 9.00 A.M. She is near the pile of cocoons with a bunch of workers. 

 I watch them for 30 minutes this morning and do not see the workers show 

 the slightest sign of hostility although they are touching her and climbing 

 over her all the time. 



6.00 P.M. The workers are licking the queen with every evidence of satisfaction. 



I have examined this colony every day up to the present time, 

 September 12, and the behavior on the part of both the queen 

 and the workers has always been the same. 



In the following experiments not more than one L. latipes 

 queen was in a colony at the same time, and although in the 

 summary I make the statement that the queens were killed it 

 should be remembered that probably the majority of them 

 would have died even if they had been in artificial nests with 

 their own workers since more than 100 died that were not 

 used in the experiment. 



B. 9. 

 Colony of 150 workers and brood of L. americanus; i queen killed. 



B. 16. 



60 workers and brood of L. americanus; 3 queens killed. The last one stayed in 

 the nest 17 days; I think she had been adopted. 



B. 176. 

 300 workers and much brood of L. danger; i queen killed. 



B. i7c. 

 25 workers, 3 winged females, 5 males, and cocoons of L. claviger var. subglaber. 



3 queens killed, one of these an alpha queen. 

 B. 1 9/1. 20 workers of L. claviger and brood; 3 queens killed. 

 B. 19/2. 20 workers and a few cocoons of L. americanus; 3 queens killed. 

 B. 19/3. 20 workers and a few cocoons of L. americanus; 5 queens killed. 

 B. 19/4. 40 workers and 100 cocoons of L. americanus; 7 queens killed. 

 B. 19/5. 20 workers of L. americanus and 200 cocoons; 6 queens killed. 



