SAND LIZARD. 



83 



Zootoca vivipara the scales are so round and small as 

 almost to form tubes. The tail is covered with numerous 

 distinct whorls, according to Duges from fifty to eighty, of 

 elongated scales, which are longer, narrower, and more dis- 

 tinctly carinated towards the extremity. The number of 

 whorls varies considerably in different individuals. 



The following are the dimensions of one of moderate 



size :■ 



Total length 



Length of the head 

 » body 



„ tail 



Breadth of the head 



In. Lines. 



7 2 



9 



2 5 



4 



7 



D 



