Fig. 4. — Part of a colony of a common highly specialized ant 

 {Camponotus ajuericaniis) of the eastern United States. 



Somewhat enlarged. The winged forms are virgin queens; the wingless 

 forms with large heads are major workers; the wingless forms with small 

 heads are minor workers. (Photograph by J. G. Hubbard and O. S. Strong.) 



Fig. 6. — One of the fungus chambers of the nest of Mycetosoritis 

 hartmani, showing the garden, which is suspended from small 

 rootlets left by the ants when they are excavating the chamber. 

 Enlarged about one-fourth. (Photograph by C. T. Hartman.) 



