HIGH SCHOOL ZOOLOGY. 



109 



1 



mil 



>)^:jniojtflgti i j ii iri ■ . J.I I 





Fig. 79 — Geckos. Platydactylus mauritanicus. |. 

 (After Brehm). 



be found in treeless districts, running over rocks and living in 

 inhabited houses. 



16. In several families of Lacertilia on the other hand we 

 meet with a form of body adapted for creeping rapidly througl). 

 underbrush and underneath stones, as well as for burrowing in 

 the ground. In such creatures the body is cylindrical, almost 

 snake-like, the limbs being either rudimentary or entirely 

 absent. Generally the hind limbs are indicated even when 

 the fore are absent, but in one Mexican genus (Chirotes), 

 it is the latter which are alone present. In the Glass_ 



