CLASS REPTILIA 



553 



Family AGAMID^:. OLD WORLD LIZARDS. These lizards 



can be readily distinguished by the position of their teeth, which 



are set on the 



edges of the jaw- 



bones (acrodont 



dentition) and not 



in grooves or 



sockets. There 



are thirty genera 



and about two 



hundred species 



in the family. 

 The flying- 



dragon, Draco 



wlans (Fig. 454), 



is a species whose 



sides are ex- 



panded into thin membranes supported by ribs. These mem- 



branes are employed as a parachute when leaping from tree 



to tree, and are folded when not in use. It is about ten inches 



long and inhabits 

 the Malay Penin- 

 sula, Sumatra, 

 Java, and Borneo. 

 Members of the 

 genus Calotes have 

 the power of chang- 

 ing their colors 

 rapidly. Another 



FIG. 454. The flying dragon, Draco volans. 

 (From Gadow.) 



Chlamydosaurus, 

 which includes the 

 frilled lizard, C. 



FIG. 455. The frilled lizard, Chlamydosaurus 

 kingi, at bay. (From Gadow.) 



This Species in- 



