L'18 



COMPARATIVE ANATOMY. 



?/' * \ 3 / x - 



'/ ^-^ i \ 



Fi<;. 178. DENTITION OF THE DOG (CanisfamUia-rin}. 

 i, incisors ; c, canines ; pm, prcraolars ; m, molars. 



I. 179. DENTITION OK THK I'uiirrrisr, (Hystrix hirvutirostfis). 

 References as before. 



