272 The Study of Animal Life PART 



SURVEY OF THE ANIMAL KINGDOM 



BIRDS. 

 Flying-Birds. Running-Birds. 



Placentals. 



MAMMALS. Marsupials. 

 Monotremes 



Snakes. Lizards. REPTILES. Crocodiles. Tortoises 



FISHES. 



Double- Breathers. 

 Bony-Fishes. 

 Ganoids. 

 Elasmobranchs. 



LANCELET. 



AMPHIBIANS. 

 Newt. Frog. 



CYCLOSTOMATA. 

 Lamprey. Hagfish. 



TUNICATES. 



Insects. Arachnids 



Myriapods. 

 Peripatus. 



ARTHROPODS. 

 Crustaceans. 



BALANOGLOSSUS 



ANNELIDS. 



WORMS." 



FLAT-WORMS. 



Cuttlefish. 

 Gasteropods. 



MOLLUSCS. 

 Bivalves. 



Feather-stars. 



Brittle-stars. 



Starfish. 



ECHINODERMS 

 Sea-urchins. 

 Sea-cucumbers. 



Ctenophores. Jellyfish. Sea-Anemones. Corals. 



STINGING-ANIMALS or CCELENTERATES, 



Medusoids and Hydroids. 



SPONGES. 



Infusorians. Rhizopods. Gregarines. 



SIMPLEST ANIMALS. 



