J*- Mf 



Ail- *■-*& 



',--» 



-0 



Fig. I. — Types of Protozoa. 



^4. Amcsba proteus, a rhizopod. i?. Peranema trichophorum, a flagellate. [BUTSCHLI.] C 

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

 E. Tokopkrya guadripartita, a suctorian. [BUTSCHLI.] <:. contractile vacuole; £. epithelial host- 

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



