TABLE XVIII. 



Systematic Survey of the Phylogenetio System of the Animal Kingdom, 

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



FIEST SUB-KINGDOM : PRIMITIVE ANIMALS (Protozoa). 

 Animals without germ-layers, intestine, or true tissues. 





IL infusorial animals ( 4. Sucking Infusoria 4. Acinetse 

 Protozoa ( Infusoria \ 5. Ciliated Infusoria 5. Ciliula 



SECOND SUB-KINGDOM: INTESTINAL ANIMALS 

 Animals with two primary germ-layers, intestine 



B. 



Plant* 

 animals 

 Zoophytes 



C. 



SSSorms 

 Vermes 



D. 



Softsboliirti 

 animals 

 Mollusca 



t: 



IV . Sea-nettles 



r. Spoi.ges 

 8. Corals 



V. Bloodless worms f 11. Primitive worms 

 Acoeloma \ 12. Flat-worms 



/13. Round- worms 

 I 14. Arrow-worms 



15. Wheel-animalcules 

 J 16. Moss-polyps 

 | 17. Mantle-animals 

 | 18. Acorn- worms 



19. Star-worms 

 \20. Ringed- worms 

 VII. Headless shell-fish / 21. Lamp-shells 



Acephala I 22. Mussels 



VIII. Head-bearing 



VI. Blood -worms 

 CiKlomati 



Ecbinoderma 

 F. 



articulated 

 animals 



Arthropoda 



G. 



Fcrtebrate 

 animals 

 Vertebrata 



/ 25. Sea-stars 

 I 26. Sea-lilies 

 f27. Sea-urchins 

 I 28. Sea-cucumberi 



IX. Ringed-arms 

 Colobrachia 

 X. Armless 

 Lipobrachia 



XI. Gill-breathers 

 Carides 



XII. Tube-b-eathers 



Traclteata 



XIII. Skull-less f 33. Tube-hearts (Lance- 



Acrania I lets) 



XIV. Single -nostrilled f 34. Round-mouths 

 Afonorrhina \ (Lampreys) 



37. Amphibians 



(Metazod). 

 s and tissues. 



6. Gastneada 



7. Porifera 



8. Coralla 



9. Hydromedus* 



10. Ctenophora 



11. Archelminthes 



12. Plathelmlnches 



13. Nemathelminthe* 



14. Choetognathi 



15. Rotatoria 



16. Bryuzoa 



17. Tunicata 



18. Etiteropneusta 



19. Gephyrea 



20. Annelida 



21. Spirobranchla 



22. Lamellibranchla 



23. Cochlides 



24. Cephalopoda 



25. Asterlda 



26. Crinoida 



27. Echinida 



28. Holothuria 



29. Crustacea 



30. Arachnida 



31. Myriopoda 



32. Insecta 



33. Leptocardia 



34. Cyclostoma 



35. Pisces 



36. Dipneusta 



37. Amphibia 



38. Reptilia 



39. Aves 



40. Mammalia 



