SAND LIZARD. • 31 



similar ones ; the space between the eye and the auditory 

 passage covered with plates, of which the two superior, lying 

 immediately under the parietal, are much the largest. The 

 scales of the upper parts of the body are round or polygonal, 

 and slightly, though distinctly, carinated. The abdominal 

 plates in six rows, the middle series narrower than the ad- 

 joining ones. Prse-anal plate single, of a broad pentagonal 

 form ; the anterior margin bordered by four pairs of plates. 

 Femoral pores varying in number from eight to fifteen on 

 each side. In the specimen figured at page 28, there are 

 eight on one side, and nine on the other. The pores are 

 in this species placed in flat triangular scales ; whilst in 

 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 

 distinctly 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 



