SAND LIZARD. 33 
Zootoca vivipara the scales are so round and small as 
almost to form tubes. The tail is covered with numerous 
distinct whorls, according to Dugés 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 :— 
In. Lines. 
Total length : : : : sO 2 
Length of the head. : ‘ : 0 9 
35 body 2 5 
ss tail 4 0 
Breadth of the head 0 7 
