The Protozoa 



157 



mil 



Fig. 79. 



A. Vorticella nebulifera (Bronn). 



B. Vorticella patellina (Calkins). 



C. Carchesium polypinum (Doflein). 



D. Diagram of Vorticella. The cilia at the side of the mouth have been 

 omitted. (From Pratt's "Manual" by permission of A. C. McClurg & Co.) 



captured prey is sucked into the body. Both fresh-water and marine 

 species are known. Podophyra is a well-known fresh-water form. 

 Sphaerophyra is parasitic in other Infusoria. 



Fig. 80. 



Podophyra gracilis. (Calkins.) (From Pratt's "Manual" by permission of A. C. 

 McClurg & Co.) 



