G. M. SMITH. PHYTOPLANKTON OF ARTIFICIAL POOLS. 



23 24 



Fig8. 1-28. 



— 9. Borgea planctonica sp. no v.; 10. Echinoaphaerella limnelica G. AI. 



iMiTH; 11 ^Kj. Schizochlamya aolitaria sp. no v.; 17 — 19. Lagerheimia wra- 



lalaiviensis Schrödkr; 20—2.5. Tetraedron reguläre var. incua Tkiiaso foniia; 



20 — 28. Daclylococcopaia irregularia sp. nov. (all X 800). 



Many empty cells where reproduction had taken place 

 irere found, and in all of these there was a fragmentation 

 ►f the cell wall into two parts (figs. 5, 8, 9). Stages showing 



