PLATE 39 



Xenocoecus GilTceyae Setchell and Gardner 



Fig. 11. Group of vegetative cells and gonidangia in various stages of 

 development, a. Gonidangium with sterile base; b. group of young vegetative 

 cells. X 500. 



Xenocoecus ipyriformis Setchell and Gardner 



Fig. 12. Groups of vegetative cells as viewed from different angles, and 

 three gonidangia. X 500. 



Xenocoecus acervatus Setchell and Gardner 



Fig. 13. Vegetative cells, some showing cell divisions, others showing a 

 heaped-up condition as seen in median plane view of the host. X 500. 



Bermocarpa sphaerica Setchell and Gardner 



Fig. 14. Vegetative cells and gonidangia: a-h, with the wall still in posi- 

 tion; and e-d, showing where the walls have dissolved in position. X 500. 



Fleurocapsa gloeocapsoides Setchell and Gardner 



Figs. 15-16. Groups of vegetative cells in various stages of development. 

 X 500. 



Fig. 17. Showing formation of gonidia. X 500. 



Arthrospira hreviarticulata Setchell and Gardner 



Fig. 18. An individual showing the loose spiral, doubled and entwined 

 upon itself. 



[482] 



