72 STORY OF THE REPTILES 



chameleon should be separated from the lizards. "We 

 have seen that outward form is not a safe guide, 



since a lizard and 



N^^g^^ ..iS^'^B^Slfe^ ^ salamander may 



have the same gen- 

 eral shape with- 

 out being nearly 

 related. 



For our j)ur- 

 poses we shall 

 speak of the rep- 



FiG.34.-A serpent. ^.j^^ ^^^^^^ ^|^^ 



following orders, and we shall learn their peculiari- 

 ties later : tortoises, serpents, lizards, crocodiles, and 

 tuateras. The last three have legs and a tail like 

 those of lizards. 



Fig. 35.— a lizard. 



