( 225 ) 

 Planche 24. 



Figure 1. Dicranopliora picla. 



2. Rhaphioccra armala. 



3. Basealidema syrphoides. 



Plancue 25. 



Figure 1. Chrysochlora castanea. 



2. Sargus coarctatus. 



■ 3. Nemotelus niloticus. 



16 



