Plate 132 



Fig. 1. Calothrix breviarticulata West & West, x 700 



Figs. 2, 3. Calothrix epiphytica West & West, x 500 



Figs. 4, 5. Calothrix fusca (Kuetz. ) Bornet & Flahault, x 900 



Fig. 6. Calothrix parietana ( Naeg. ) Thuret, x 405 



Fig. 7. Calothrix stagnalis Gomont, x 500 



Figs. 8-11. Tuomeija fliiviatilis Harvey: 8, habit of colony, x 1; 9 

 and 10, portions of thallus showing cartilaginous cor- 

 tical cells, X 150; 11, apex of thallus (after Setchell, 

 ex Smith, courtesy McGraw-Hill Co.), x 250 



[924] 



