THE SA\GL'I.\ARY ANTS. 



453 



of her experiments resulted in the formation of a colony com- 

 prising workers of Stigmatoinina pallipcs (Ponerine), Formica snb- 

 scricca ( Camponotine), and Aphtctiogastcr fulra ( Myrmicine) ; 

 another was made up of such heterogeneous components as Cam- 

 ponotus pennsylvanicus, Formica sanguined, A. fnlva and C rcinasto- 

 gastcr lincolata. In these artificial mixed colonies she found that 



FIG. 266. Mixed colony consisting of workers of Camponolus pennsylvanicus, 

 Formica subsericca and Aphccnogastcr picea reared by Miss A. M. Fielde. Photo- 

 graph by J. G. Hubbard and Dr. O. S. Strong.) 



" there is a close affiliation of ants of different species. Those of dif- 

 ferent subfamilies sometimes lick one another. Introduced young is 

 carried about and taken care of without regard to its origin. Ants 

 of one genus accept regurgitated food from those of another genus." 

 She gives the following recipe for producing such colonies: "If one 

 or more individuals, of each species that is to be represented in the 

 future mixed nest, be sequestered within twelve hours after hatching, 



