72 STORY OP THE REPTILES 



chameleon should be separated from the lizards. We 

 have seen <j;hat outward form is- not a safe guide, 



since a lizard and 

 a salamander may 

 have the same gen- 

 eral shape with- 

 out being nearly 

 related. 



For our pur- 

 poses we shall 

 speak of the rep- 



FIG.34.-A serpent: ^jj^^ ^^^^^ ^-^^ 



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. 



