The Freshwater Algat of Africa 6< 15 



Var. coronata, Lemmerm. 



Sample 14. 



Var. punctata, Lemuierm. 

 Samples 5, 14. 



VI. PERIDINEAE (DINOFLAGELLATA). 



Species of Peridinvwm were encountered in samples 24 and 39, but 

 were too scanty for adequate determination. 



