Fig. 2. 



Form, san- 

 guinea Ltr., 

 subsp. rubi- 

 cuiida Em. 

 Normal wor- 

 ker, from the 

 same nest. 



Formica san- 

 giiinea Ltr., 

 subsp. nibicuti- 

 daEm. Pseudo- 

 gyne from the 

 same nest. 



Xenodusa cava 

 Lee, whose lar- 

 val education 

 caused the rea- 

 ring of Pseudo- 

 gynes in the 

 same colony of 

 ants. 



(All figures magnified to seven times their natural size.) 



