590 



INDEX. 



Family of Lamellirostres — continued. 

 Ducks 

 Swans 

 Geese 



True ducks 

 Periodical mi,2:rations of 



CHAPTER XXVII. 



Mammalia ...... 



Essential character of ... 



Classification of, on what based 



Connecting link . 

 Sub-Class — Ovo-vivipara 

 Order 1. — Monotremata 



Duck-billed platj-pus 



Porcupine ant-eater 

 Order 2. — Marsupialia, pouched quadrupeds 



For what remarkable 



Kangaroos ..... 



Opossums ..... 



Dasyuri ...... 



Phalangers ..... 



Bandicoots ..... 



Myrmecobius ..... 



Wombat ...... 



Carnivorous marsupialia very few in number 



Zebra wolf ..... 



Sub-Class. — PlacentaHa .... 



Placental quadrupeds 

 Order 1. — Whales. Cetacea 



Cetacea are mammalia deprived of hinder limbs 



They breathe air .... 



Their blood is hot . . . ' . 



"Blubber" 



First Section includes Dolphins and Narwhals 



Dolphins (properly so called) 



Common dolphin .... 



Porpoises ...... 



Common porpoise . • . 



Grampus ...... 



Xai-whals ...... 



Sea-unicorn ..... 



Whale's head exceedingly large . 



Cachalots ...... 



Whalebone whales .... 



Whalebone forms a kind of sieve . 

 Herbivorous Cetacea .... 



Have teeth with fiat crowns. 



Sea-cows . ..... 



Dugongs . ..... 



Order 2. — Thick-skinned Quadrupeds. Pachydermata 



Proboscidian pachyderms 



Elephants . 



