EXPERI3IENTS WITH MYRMICA AND LASIl/S. 163 



Again 



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, howevef, she 

 brought no other ant to assist. 



I also made similar experiments with Myfmica 

 ruginodis and Lasiua mger, imprisoning (as before) 

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



