58 INVERTEBRATE ZOOLOGY 



spiral; body cilia rarely prosont. Vorticella , Cydochaeta, Tricho- 

 (lina, (\)thurn.ia, Zoolhamnium, Carchesium, Epistylis, Opercularia. 

 V. Class Suctoria. — Cilia confined to buds or embryos; adults bear 

 tentacles for sucking and piercing; usually attached by a stalk. Den- 

 drosoma (Fig. 35 A), Tokophrya (Fig. 35 D), Sphaerophrya (Fig. 35 E), 

 Podophrya, Acineta, Ephelota, Rhynchaeta, Ophryodendron (Fig. 35 C). 



References 



Calkins, G. N. 1926. "Biology of the Protozoa." New York, Lea and 



Febiger. 

 Craig, C. F. 1911. "The Parasitic Amoebae of Man." Philadelphia, 



Lippincott. 

 . 1926. "A Manual of the Parasitic Protozoa of Man." Phila- 

 delphia, Lippincott. 

 DoBELL, C. G. 1921. "The Intestinal Protozoa of Man." London, John 



Bale, Sons and Danielson. 

 DoFLEiN, F. 1916. "Lehrbuch der Protozoenkundc," 4th ed. Jena, G. 



Fischer. 

 Haeckel, E. 1862-1888. "Die Radiolarien (Rhizopoda radiosa): Einc 



Monographic." Berlin. 

 Kent, W. S. 1880-1882. "A Manual of the Infusoria (etc.)." London, 



D. Bogue. 

 Leidy, J. 1879. "Fresh-water Rhizopods of North America." Rept.U.S. 



Geol. S^irvey, Vol. 12. 



