WITH MYRMICA AND LA8IU8. 163 



At 6.31 P.M. she returned and took another. Again 

 6.33 



6.35 



6.36 

 6.37 



6.38 



6.40 r 



6.41 



6.45 



6.47 



6.49 



6.50 



6.51 

 6.52 



6.53 



6.55 



6.56 



6.57 



7. 



7. 1 



7. 2 



7. 6 



After these 45 visits, she came no more till 8 P.M. ; 

 but when I returned at 10 P.M. I found all the pup 

 gone. During the time she was watched, however, she 

 brought no other ant to assist. 



I also made similar experiments with Myrmica 

 ruffinodis and Lasius niger, imprisoning (as before) 

 all ants that came, except the marked ones, and with 



M 2 



