THE TEETH OF MAMMALS. 265 



Relation of the existing Mammalian orders to one 

 another : 



Hominina. 



PRIMATES. 



Simiina. 

 Lemurina. 

 CHIROPTERA. 



INSECTIVORA. CARNIVORA. 



Fissipedia, Pinnipedia. 



HYRACOIDA. CETACEA. 



RODENTIA. SlRENIA. 



DINOCERATA (?) Perissodactyla. 



PROBOSCIDEA. UNGULATA. 



Suina. Tylopoda. 



Artiodactyla. 

 Tragnlina. Pccora. 



EDENTATA. 



Primates include man and the monkeys, the Lemurs connecting 

 them with both the Insectivora and Chiroptera. 



Chiroptera Bats. 



Insectivora Moles, Hedgehogs. &c. 



Carnivora fissipedia Cats, Dogs, and Bears, &c. 



Carnivora pinnlpcdi a Seals, Walrus, &c. 



Cetacca Whalebone Whales, Sperm Whales, Porpoises, &c. 



Sirenm (Herbivorous Cctacea) Manatee, Dugong, &c. 



Ungulata (Hoofed Mammals) 



(i.) Perissodactyla, or odd-toed Horse. 



Tapir, Rhinoceros, &c. 



(ii.) Artiodactyla, or those with an even number of toes Pigs 

 and their allies, Camels, Ruminants, &c. 



Dinoccrata Gigantic Fossil Mammals, somewhat intermediate be- 

 tween Perissodactyl Ungulata, and Proboscidea. 



llyracoidca The anomalous Hyrax (Biblical " Cony ") alone. 



Proboscidea Elephants, extinct Mastodons, &c. 



liodent'la Hares, Rabbits. Rats, &c. 



Edentata Sloths, Armadillos, Ant-Eaters, &c. 



To illustrate the meaning of the table, the gap existing between 

 the typical Camivora and the Cetacea is bridged over by the seals, 

 which, though true carnivora, are some of them near the Cetacea 



