62 



STRUCTURE OF THE VERTEBRATES 



bite would be fatal to man. The ability to change color is an- 

 other characteristic of several genera. The best example of this 

 is the chameleon of Europe, Asia and Africa. The small green 

 lizard (Anolis) of the southern United States has similar, al- 

 though less marked, ability to change under differing environ- 



Garter 



--^^\ Rattle Snake 



Fig. 22. Types of Lizards and Snakes (Sub-class Parapsida). The lizards 

 show the specialization of the order toward leglessness, bony armor, pro- 

 tective poison, and the running modification. 



