AN ARRANGEMENT OF THE MAMMALIA. 75 



covered in different parts of the world. Tiiese point with ever 

 increasing clearness to the relation of his family to the stock 

 from which both Homo and the simians are derived in pre- 

 historic time. Such material is of the utmost importance and 

 significance, but it is quite out of the question to enter upon 

 its description here, more particularly as every intelligent person 

 now fully recognizes the fact that Man sees his nearest relatives 

 in the existing simians ; that he belongs in any complete scheme 

 of classification of the Mammalia that we undertake to make; 

 and that he is, and will ever be just as much subject to the 

 law of evolution as any other mammal, living or extinct. 



My present views then on the classification of the Mam- 

 malia are set forth in the following arrangement. 



A Classification of the Mammalia. 



Kingdom: 



Animalia (Animals). 



Phylum: 



Vertebrata (Vertebrates). 



Branch: 



Craniata (Skulled Animals). 



C 1 a s s : 



Mammalia (Mammals). 



Class Mammalia. 



Subclass I. Prototheria. (Lowest Mammals.) 



Order I. Monotrema,ta. (Monotremes.) 



Suborder I. Monotremataf ormes. (Monotreme Animals. 

 Family 1. Ornithorhynchidae. (Duckbill.) 

 — II. Echidnidae. (Echidna.) 



