APPENDIX. 



TABULAR VIEW OF THE CHIEF DIVISIONS 

 OF THE ANIMAL KINGDOM. 



(Extinct groups are marked with an asterisk. Groups not rep- 

 resented at all as fossils are marked with two asterisks.) 



INVERTEBRATE ANIMALS. 



SUB-KINGDOM I. PROTOZOA. 



Animal simple or compound ; body composed of " sarcode, " 

 not definitely segmented ; no nervous system ; and no digestive 

 apparatus, beyond occasionally a mouth and gullet. 



CLASS I. GREGARINID^:. ** 

 CLASS II. RHIZOPODA. 



Order i. Monera. ** 



Order 2. Ama?bea. ** 



Order 3. Foraminifera. 



Order 4. Radiolaria ( Polycystines, &c.) 



Order 5. Spongida (Sponges). 

 CLASS III. INFUSORIA. ** 



SUB-KINGDOM II. CCELENTERATA. 



Animal simple or compound; body-wall composed of two 

 principal layers; digestive canal freely communicating with the 

 general cavity o'f the body ; no circulating organs, and no 

 nervous system or a rudimentary one ; mouth surrounded by 

 tentacles, arranged, like the internal organs, in a " radiate " or 

 star-like manner. 



(389) 



