172 



SUBKIKGDOM VERTEBRATA. 



Fig. 289. 



Fig. 290. 



2. Foot of Chameleon. 



to go its own way, the animal tumbles about as if intoxicated. 



Three of its five toes on 

 each foot are united in 

 an opposable bundle to 

 the other two, giving a 

 firm grasp to the branch 

 around which it winds 

 its prehensile tail. It 

 never moves two feet 

 at once, and often car- 

 ries one sluggishly for- 



Iguana tuber culata, Iguana. ^ 5 . ward after the other, 



with the imperceptible movement of the hour-hand of a 

 watch ; but its long, gummy tongue is Mg. 291. 



quick enough to catch a fly buzzing 

 past, at the distance of twice the length 

 of the Chameleon's body. 



IgTianidae. The Iguana occurs in 

 both hemispheres, but the typical 

 genus only in South America. Some 

 species of this arboreal lizard are 

 prized as food. 



Agamidae. The Horned Toad of 

 Western North America may be tamed 

 as a pet and taught to come and go at 

 cali. 



Greckotidse. The Gecko has ex- 

 panded toes, from which a sticky fluid 



. . J Phryno&ma cornuta. 



exudes, enabling it to ascend smooth Homed Toad. j. ' 



