Plate 92 



Fig. 1. Stjnura Adamsii G. M. Smith, x 590 



Figs. 2, 3. Ceratium carolinianum (Bailey) Jorgensen, x 500 



Figs. 4, 5. Ceratium hirimdinella (O. F. Muell. ) Dujardin: 4, cyst, 

 X 590; 5, X 1000 



Figs. 6, 7. Synura uvella Ehrenberg: 6, x 1250; 7, x 500 



Figs. 8, 9. Ceratium cornutum ( Ehrenb. ) Claparede & Lachmann, 

 x500 



[844] 



