226 ILLINOIS BIOLOGICAL MONOGRAPHS [464 



EXPLANATION OF PLATE 



Figs. 159 to 182. Chloromyxum trijugum. Original. 



Figs. 159 to 174. Trophozoites of various form and age. 



Figs. 159 and 160. Trophozoites of medium size. X640. 



Fig. 161. A trophozoite, ten minutes after it was removed from the host. X1700. 



Figs. 162 and 163. The movements of pseudopodia of the same specimen in ten minutes. 

 X1700. 



Fig. 164. The same specimen after thirty minutes. X1700. 



Figs. 165 to 167. A trophozoite, showing the change of pseudopodia in five and ten minutes. 

 X1700. 



Figs. 168 to 172. Small trophozoite with different numbers of the nuclei. Fig. 172 is prob- 

 ably a disporous form. X2350. 



Fig. 173. A monosporous trophozoite with a young spore. X2350. 



Fig. 174. A young spore. X2350. 



Figs. 175 to 177. Different views of fresh spores. X1700. 



Fig. 178. A Giemsa stained spore. X1700. 



Figs 179 and 180. Side views of the valves showing the ridges by Giemsa staining. X 1700. 



Fig. 181. A spore treated with potassium hydrate solution, and stained with Giemsa solu- 

 tion. XI 700. 



Fig. 182. A spore from which the sporoplasm is leaving the shell. From the Giemsa smear 

 of the infected bile. X 1700. 



