220 ILLINOIS BIOLOGICAL MONOGRAPHS [458 



EXPLANATION OF PLATE 



Figs. 75 to 80. Myxoproteus ambiguus. After Doflein (1898). 



Figs. 75 and 76. Trophozoites of typical forms (1898, Figs. 12 and 52). 



Figs. 77 and 78. Young trophozoites produced by budding (1898, Figs. 55 and 56). 



Figs. 79 and 80. Spores (1898, Figs. 54 and 64). X about 800 and 1080. 



Figs. 81 to 83. Spores of Myxoproteus cordiformis. After Davis (1917, Figs. 79, 80 and 78). 



X1500. 

 Fig. 84. A spore oi Myxoproteus cornutus. After Davis (1917, Fig. 85). X1400. 

 Figs. 85 to 95. Wardia ovinocua. Original. 

 Fig. 85. A portion of the cross-section thru an infected ovary of Lepomis humilis, showing 



the parasite in one ovum and the hypertrophied nurse cells and several connective tissue 



layers. X 160. 

 Fig. 86. A portion of the cross-section of a cyst. X640. 

 Figs. 87 to 89. Three different views of fresh spore. X2000. 

 Figs. 90 and 91. Stained spores. X1700. 

 Fig. 92. A spore mechanically pressed and stained with Giemsa's mixature, showing the 



escaping polar capsules without extruding polar filament, and the sporoplasm. X1700. 

 Figs. 93 to 95. Front and lateral views of the shell valves, exhibiting the network-like fine 



ridges on the surface and the posterior processes. X1700. 

 Figs. 96 and 97. Spores of Wardia ohlmacheri. After Ohhnacher (1893, Figs. 4a and 2). 



2mm. and oc. 4. 



