TABLE XVIII. 



Systematic Survey of the Phylogenetic System of the Animal Kingdom, 

 founded on the Gastrasa Theory and the Homology of the Germ-layers. 



FIRST SUB.KINGDOM : PRIMITIVE ANIMALS (Protozoa). 

 Animala without germ-lay ers, intestine, or true tissues. 

 A. ( L Kpg-animals ( Mone r a J- M <! nera 



l|rimttibe I **..* 



Animals n Infusorial animals 



Protozoa \ Infusoria 



SECOND SUB-KINGDOM : INTESTINAL ANIMALS (Mctazoa). 

 Animals with two primary germ-layers, intestines and tissues. 



4. Suckins Infusoria 



5. Ciliated Infusoria 



4. Acinetas 



5. CiliaU 



Q. 



Vertebrate 

 animals 

 Vertebrate 



XIII. Skull-less ( 33. Tube-hearta (Lance- 33. Leptocardia 



Acrania \ lets) 



XIV. Single-nostrilled ( 34. Round-mouths 34. Cyclostoma 



Jtonorrhina \ (l^ampreys) 



KV Amninn lou 1 35. Fishes 35. Pisces 



"ZSST {j-isjasu asssa: 



xv,. AJJU-JJ^U I g; *- g; K' 



Amnwta 1 _,_ M . in , maU 40- Mammali* 



