PLATE 4 



EXPLANATION OF FIGURES 



Thelohania illinoisensis nov. spec. 



61 A fresh sporont, containing eight mature spores. Sm. X 2360. 



62 and 63 Isolated fresh spores. Sm. X 2360. 

 64 and 65 Stained spores. Sm.G. X 2360. 



66 One of the young spores from the sporont shown in fig. 69, studied under 

 higher magnification. Sm.G. X 3500. 



67 and 68 Two spores. Sm.H. X 3500. 



69 A sporont with young spores. Sm.G. X 2360. 



70 to 74 Spores with extruded polar filaments. Sm.P.F. Figs. 70 to 73, X 

 2360; fig. 74, X 3500, showing only the basal part of the filament. 



190 



