THE LIZARDS, SNAKES, AND OTHER REPTILES. 187 



and the Awphislwnd. These are very sudden transitions 

 from the swift, agile lizard; but nature does not make a 

 leap, and in the two-footed lizards, Pseudopus, with its fore 

 legs wanting, and in Chirotes and Pyyopus, in which the 

 hind feet are wanting, we have connecting links between 

 the ordinary lizard and the Amphisbaena (Fig. 194). This 



FIG. 193. West Indian Anolis. 



singular creature, which lives in ant-hills, is thus the result 

 of adaptation. Its tail is nearly as broad as its head; and 

 since the creature runs backwards as well as forwards, it is 

 popularly supposed to be two-headed. It feeds on ants 

 and other insects. 



The Snakes. It would be difficult for the untrained ob- 



