Plate XXXIII; Figures 217 to 220. 



Fig-. 217. Draparnaldia glomerata Ag. (250 



diameters) page 48 



Fig. 218. Penium N:avicula Breb. (1000 



diameters) "60 



Fig. 219. Mesotcenium micrococcum (Kiitz.) 



Roy and Biss. (1000 diameters) " 57 



Fig. 220. Myxonema attenuatum Maz. . "47 



