198 Descriptive Zoology. 



The Chameleon. The true chameleon is found in Africa. Its power 

 to change its color has been mentioned. It has a laterally compressed 

 body, with a prehensile tail. Its feet are fitted for climbing by having 

 two toes on one side and three on the other. The two eyes can move 

 independently of each other, and the tongue can be darted out four or 

 five inches after insects. 



The Horned Toad. This is a lizard with a broad, relatively short 

 body, with spines on the back of the head. It is found in the dry 

 regions of the Western and Southwestern states. 



FIG. 124. THE GILA MONSTER. 



The only poisonous lizard. From Kellogg's Zoology. 



The "Gila Monster." This is the largest of the lizards found in 

 the United States, being about eighteen inches long. It is found from 

 New Mexico south and west. It is brown, with red markings. Its 

 bite is poisonous, though seldom fatal to man. 



The Iguanas. In Central and South America and the West Indies 

 are found the lizards called iguanas. They are about three feet long, 

 and are found on the lower branches of trees. They are used as a food 

 by the natives, and are said to be excellent eating. 



The Monitors. The monitors are found in Africa, Australia, and 

 the East Indies. They are the largest of living lizards, being five or 

 six feet long. 



Differences between a Salamander and a Lizard. Salamanders are 

 commonly called lizards. The two animals have a general resemblance 

 in form, both having elongated bodies, with two ^ pairs of limbs and a 

 long tail. The following tabular statement shows important points of 

 difference : 



SALAMANDER (Amphibian). LIZARD (Reptile). 



Smooth Skin Scaly 



Unarmed Toes With claws 



Present in young Gills No gills at any stage 



A metamorphosis Development Young like adult 



