SIMULIIDAE OF AFRICA 



163 



205 



206 



208 



207 



209 



210 



Figs. 205-210. Pupal gill form in African subgenera of Simulium. 205 and 206, Free- 

 manellum. 207, Wilhelmia. 208, 5. gyas, doubtfully assignable to subgenus Metom- 

 phalus. 209 and 210, Edwardsellum. 



