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 Ciliatar), .... 550 



Index 



569 



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