THE SOLDIERLESS TERMITES OF AFRICA 



85 



168 



166 



169 



Figs 156-169. Astalotermes, imago head capsules, front and side views. 156-159, A. 

 acholics showing sexual dimorphism of fontanelle; 160-162, A. brevior, side views show 

 variation of postclypeus; 163, 164, A. obstructus; 165-169, A. quietus, variation in form. 



