TRANSACTIONS OF THE SECTIONS. 65 
ZOOLOGY AND BOTANY. 
On the Classification of the Mammalia. By G. R. WATERHOUSE. 
Tue paper is chiefly explanatory of the following tabular arrangement, in which the 
author has attempted to group the various orders of the class Mammalia, so as to dis- 
play their mutual relations. 



QUADRUMANA. 
1 
Galeopithecus. 





Pteropus. Cercolentes, 







Lemur. 

CARNIVORA, 
4 
CHEIROPTERA. 
2 




Gymnura, \Uydaus. Phoca. 


Vespertilio. Sore. 
INSECTIVORA. 
3 







Centetes, Manatus. 
PACHYDERMATA. 
6 

Equus. 




Elephas. Camelus, 
RUMINANTIA, 
” 
4 








RODENTIA. 
9 



Megatherium. 
Bradypus. 

Lepus, 

Lagostomus. 
EDENTATA,. 
8 






Phaseolomys. 
°g te 
SS RY 

sake 
MARSUPIATA, 
10 
Monotremata. 
In this table the circles 1 to 9 inclusive, comprise the nine orders of Placental 
Mammalia, and the circle 10 represents the Implacental, or Marsupial order. The pla- 
_ cental series appears to divide itself into two great sections ; the first or highest em- 
_ braces the order Quadrumana, Cheiroptera, Insectivora, and Carnivora, the species of 
_ which possess the four kinds of teeth, viz. incisors, canines, false molars, and true 
_ molars, in a well-developed condition. They are chiefly animals of prey, carnivorous 
or insectivorous, if we except the first order, containing those mammals which in all 
_ their characters approach most nearly to man, and are chiefly frugivorous. 
_ The author proceeds to point out the peculiarities in the brain as observable in these 
great sections, but remarks he is not prepared, in our present state of knowledge of 
_ this organ, to follow those naturalists who would found a classification chiefly upon 
its modifications ; certainly not upon those pointed out. He is not satisfied that in 
1843. F 
