n 



Fig. i. Types of Protozoa. 



A. Amceba proteus, a rhizopod. B. Peranema trichophorum, a flagellate. [BUTSCHLI.] C 

 Stylonychia mytilus, a ciliate. [BUTSCHLI.] D. Pyxinia sp. a sporozoon. [WASIELEWSKY.] 

 E. Tokophrya quadripartita, a suctorian. [BUTSCHLI.] c . contractile vacuole ; e. epithelial host- 

 cell ; . nucleus ; v. food or gastric vacuole. 



