Plate 52 



Figs. 1, 2. Botryococctis Braunii Kuetzing, x 375 (redrawn from 

 Blackburn ) 



Fig. 3. Botryococciis sudeticus Lemmermann, x 600 ( redrawn 



from Smith ) 



Figs. 4, 5. Botryococciis protuberans var. minor G. M. Smith: 4, x 

 750; 5, X 1500 (redrawn from Smith) 



Figs. 6, 7. Tetraedron enorme (Ralfs) Hansgirg fa., x 885 



Fig. 8. Trochiscia obtusa ( Reinsch ) Hansgirg, x 750 



Figs. 9, 10. Gloeocystis major Gerneck: 9, x 750; 10, x 560 



Fig. 11. Botryococciis Braunii Kuetzing, x 600 (after Smith) 



[764] 



