494 APPENDIX 



MAMMALIA. Vertebrates which nourish the young by means 

 of milk, and are usually covered with hair. Monothemata, ovipa- 

 rous mammals (439). Maksupalia, provided with a marsupium 

 (440). Edentata, teeth either absent, rudimentary, or without 

 enamel (441). Cetacea, marine hairless mammals, hind limbs 

 absent (442). Uxhulata, hoofed mammals: even-toed ungulates 

 (444) ; odd-toed ungulates (445) ; elephants (44.5). Rodentia, 

 canines absent, incisors grow continuously through life (446.) Car- 

 nivora, canines large (446). Insectivora, small, terrestrial, car- 

 ni\-orous mammals, with small canines (445). Cheiroptera, 

 mammals with flying membrane between elongated digits (44S). 

 Primates, with hands (449). 



