iiXPERIMENTS WITH MYRMICA AND LASIUS. 163 



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



6.33 



6.35 



6.36 



6.37 



6.38 



6.40 



6.41 



6.45 



6.47 



6.49 



6.50 



6.51 



6.52 



6.53 



6,55 



6.56 



6.57 



T. 



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 pupae 

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

 brought no other ant to assist. 



I also made similar experiments with Myrmica 

 ruginodis and Lasius niger, imprisoning (as before) 

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



m 2 



