228 ILLINOIS BIOLOGICAL MONOGRAPHS [466 



EXPLANATION OF PLATE 



Fig. 183 to 186. Sphaerospora divergens. 



Fig. 183. Trophozoite. After Th^lohan (1895, Fig. 12). X750. 



Figs. 184 and 185. Two views of spore. After Auerbach (1912, PI. 5, Fig. 4). X about 



1500. 

 Fig. 186. A spore treated with nitric acid. After Thdohan (1895, Fig. 13). X1500. 

 Figs. 187 and 88. Spores of Sphaerospora elegans. After Th61ohan (1890b, Fig. 1). X 



about 1000. 

 Fig. 189. A spoKoi Sphaerospora rostrata. After Th61ohan (1895, Fig. 93). X about 1635. 

 Figs. 190 to 192. Spores of Sphaerospora masovica. After Cohn (1902, Fig. 3). X 1000. 

 Fig. 192. Spore with extruded polar filaments and "starren FSden" by warming. 

 Figs. 193 and 194. Spores of Sphaerospora platessae. After Woodcock (1904, Fig. 7d). 



X900. 

 Figs. 195 to 197. Spores of Sphaerospora angulata. After Fujita (1912, Fig. 3). X about 



2800. 

 Figs. 198 and 199. Spores of Sphaerospora polymorpha. After Davis (1917, Figs. 91 and 92) 



X1500. 

 Figs. 200 to 204. Sphaerospora carassii. Original. 

 Fig. 200. A trophozoite. X2250. 

 Figs. 201 to 203. Different views of spores. X1800. 

 Fig. 204. A young spore. X2250. 



Figs. 205 to 209. Sinuolinea dimorpha. After Davis (1916). 

 Fig. 205. A fresh trophozoite (1916, Fig. 1). X1400. 

 Figs. 206 and 207. Trophozoites with erythrocytes in different stages of disintegration 



(1916, Figs. 2 and 57). X640. 

 Fig. 208. A stained disporous trophozoite (1916, Fig. 41). 

 Fig. 209. A stained gemmule (1916, Fig. 72). 



