so A SYNOPSIS OF ANIMAL CLASSIFICATION. 



tipped with a sensitive finger-like 

 process. One pair of incisors, 

 which develop into mammoth 

 tusks. (In recent forms it is those 

 of the upper jaw. Lower incisors 

 in Dinothertum.) Placenta decidu- 

 ate and zonary. x Elephas. 



Order 9. Hyracoidea A single family of small, rodent- 

 like mammals with five digits on 

 fore foot (two rudimentary) and 

 three on hind foot. Four upper 

 and four lower incisors, outer up- 

 per ones early deciduous, leaving 

 inner ones, which are chisel-like and 

 continue growth as in Rodentia. 

 Placenta deciduate and zonary. 



X Hyrax. 



Order 10, Carnivora Beasts of prey with sharp well 



developed canines and pointed 

 molars. The toes are armed with 

 claws, which may become sharp 

 and retractile. Placenta deciduate 

 and zonary. There are two groups, 

 one terrestrial, Fissipedia, with toes 

 separate, and one aquatic, Pinnipe- 

 dia, with toes strongly webbed, 

 forming paddles, x Felis, Phoca. 



Order II. Rodentia A group of small animals with 



teeth fitted for gnawing. One pair 

 of incisors in each jaw develop 

 into sharp cutting chisels; the 

 others are usually wanting. Ca- 

 nines wanting. The molars are 

 fitted with transverse ridges for 

 cutting. Placenta deciduate and 

 discoidal. x Mus, Sciurus. 



Order 12. Insectivora Small insect-eating mammals with 



