FIG. 409. The Argentine ant (Iridomyrniex hnmilis Mayr.) 

 <7, worker ; b, fertile queen. (After Newell) 



V *.. >* *'* 



FIG. 410. Mound nest of western agricultural-ant (Pogonomyrmex occidentals 

 Cress.), showing entrance hole in mound, and cleared space around it 



(After Headlee and Dean) 

 258 



