PROBLEM OF COMMUNAL DEPENDENTS 



On the other hand, the males are phenomenally stupid. 

 They are unable to distinguish friends from foes, or to 

 find their way back home when they wander from their 

 nests. The points in which they are richly endowed are 

 the eyes and antennae, 

 the two sense organs 

 which are connected 

 with the brain, and 

 give that keenness of 

 sight and smell re- 

 quired for their espe- 

 cial function in life- 

 to possess themselves 

 of the female during 

 or before their nuptial 

 flight. 



With these etholog- 

 ical facts closely cor- 

 responds the structure 

 of the brain in the 

 three forms that con- 

 stitute an ant commu- 

 nity. This has been 

 admirably shown by 

 Doctor Forel in his fig- 

 ures of the brains of 

 the worker, queen and 



M. 



Fig 7 7_ TH E BRAIXS OF ANTS 

 Worker. F Female. M Male. 



(After Forel.) 



male of LasillS fldigi- 



nosus (Fig. 77). The 



brain is relatively large 



in the worker, the cortical portion extremely rich in 



cellular elements. It is much smaller in the female, 



and is almost vestigial in the male, although in the 

 '3 183 



