3 
Systematic Arrangement of the Existing Groups of the 
Class Mammalia. 
Subclass I. PLACENTALIA. 
Order I. PRIMATES. Page 
Suborder 1. Anthropoidea : Man, Apes, and Monkeys. , . , 12 
2. Lemuroidea Lemurs 21 
Order II. CHIROPTERA. 
Suborder 1. Megachiroptera : Fruit-Bats 25 
2. Microchiroptera : Insect-eating Bats 25 
Order III. INSECTIVORA. 
Suborder 1. Insectivora Vera : Shrews, Moles, Hedgehogs, &c. . . SO 
2. Dermoptera : Flying Lemurs 34 
Order IV. CARNIVORA 
Suborder 1. Fissipedia : Cats, Dogs, Bears, &c 35 
2. Pinnipedia: Seals, Walrus, and Sea-Lions 40 
Order V. RODENTIA. 
Suborder 1. Simplicidentata : Squirrels, Mice, Porcupines, &c. , . 57 
2. Duplicidentata : Hares and Rabbits 62 
Order VI. UNGULATA. 
Suborder 1. Hyracoidea : Hyrax 63 
2. Proboscidea : Elephants 64 
3. Perissodactyla: Rhinoceroses, Tapirs, and Horses . . 66 
4. Artiodactyla 60 
Section 1. Pecora : Oxen, Antelopes, Deer, and Giraffes 70 
2. Tylojjoda: Camels and Llamas 78 
3. Tragulina : Chevrotains yq 
4. 8uina : Hippopotamus and Pigs 79 
B 2 
Order VII. SIRENIA : Sea-Cows 
80 
