CONTENTS 



IX 



CHAPTER XVI. THE LOWEST ANIMALS, Subkingdom Protozoa. 



Characteristics of Protozoans The Root-Footed Group (Class Rhizopoda) The Amaebas 

 (Order Lobosa) Order Foraminifera Sun- Animalcules (Order Heliozoa) Order 

 Radiolaria The Infusorial Animalcules (Class Infusoria) Flagellated Infusorians 

 (Order Flagellata) Ciliated Infusorians (Order Ciliata), . . . 550 



INDEX 



569 



