596 



COLLEGE ZOOLOGY 



Fig. 481. — Rhea, Rhea americana. 

 Evans.) 



(From 



Order 4. Rhei- 



formes. — Rheas. — 

 These are the New- 

 world ostriches (Fig. 

 481). There are three 

 species inhabiting the 

 pampas of South 

 America. They are 

 smaller than the true 

 ostriches, but their 

 habits are quite similar. 

 Order 5. Casuari- 

 iformes. — Casso- 

 waries and Emeus. — 

 The two families in 

 this order contain 



ostrich-like birds; the Drom^id^: or emeus (Fig. 482), which 



are, next to the ostriches, the largest of living birds, are confined 



to Australia ; the Casuariid^e or 



cassowaries inhabit New Guinea 



and neighboring islands. The cas- 

 sowaries usually possess a bony, 



helmet-like knot on the head, and 



have brightly colored lobes on the 



head and neck; these are absent in 



emeus. 



Order 6. Crypturiformes. — Tin- 



amous. — About forty species of 



tinamous are known. They re- 

 semble game-birds in appearance 



and are called partridges by the 



natives of southern Mexico and 



Central and South America, where 



they live. The powers of flight of 



the tinamous are not well devel- 





Fig. 482. — Emeu, Dromaus nova- 

 hoUandias. (From Evans.) 



