ILLUSTRATIONS 



PI. I. Dangeard, Scherffel, Zopf, Cornu Frontispiece 



TEXT FIGURES 



FIGURE PAGE 



1. Zoospore types 8 



2. Flagellar types 12 



3. Diagrams illustrating types of development in chytridia- 



ceous fungi 48 



4. Sexuality in the Chytridiales 72 



5. Cytology of Polyphagia euglenae Nowakowski 80 



6. Cytology of Cladochytrium replicatum and Endochytrium 



operculatum °° 



7. Cytology of Aster ophlyctis sarcoptoides 94 



8. Cytology of Catenochytridium later ale and Rhizophydium 



coronum "7 



9. Cytology of Polychytrium aggregatum Ajello 102 



10. Plankton parasites 108 



11. Plankton parasites HO 



12. Olpidiaceae 124 



13. Olpidium I 36 



14. Rozella allomycis Foust parasitic in Allomyces 179 



15. Achlyogetonaceae 186 



16. Synchytriaceae 196 



17. Rhizophydium 228 



18. Phlyctidiaceae 286 



19. Phlyctidiaceae 31 8 



20. Phlyctidiaceae 33 ° 



21. Phlyctidiaceae 36 ° 



22. Entophlyctis 37] 



23. Diplophlyctis 385 



xxiu 



