S A U R I A. 



area near the tail, which is covered with small scales. The toes, like 

 the fingers, are very slender, and covered by similar scales. 



The ground color is blackish-grey or brown ; the upper surface of 

 the head and neck sometimes uniformly so, and at others, dotted with 

 white and black. There are two light longitudinal streaks on each 

 side : the uppermost is brownish-yellow, inclosing two dorsal series of 

 quadrangular black patches, separated transversely by a yellowish or 

 whitish spot or bar; these spots sometimes alternate, at others are 

 placed opposite to one another ; they are either distinct upon their 

 inner margin or else contiguous. Another series of quadrangular 

 black patches is observed along the flanks, between the two light 

 streaks ; they are likewise separated by a transverse, yellowish, or 

 whitish bar. The upper aspect of the limbs is maculated with black 

 and white, or yellowish. The inferior surface of the head, body, limbs, 

 and tail, is uniform whitish, or dull yellow, except in the male, in which 

 the lower part of the neck is provided with a black, somewhat diffused 

 blotch. 



LOG. Specimens of this species were collected on the 10th of Feb- 

 ruary, 1839, on the coast of Patagonia, one of which was sketched 

 from life by Mr. Drayton. They are said to be quite abundant among 

 the sandhills. 



Plate XVII, fig. 8, represents Eulaemus darwini, in profile and size 

 of life. 



Fig. 9, exhibits the same specimen, from beneath. 



Fig. 10, is the head, seen from above ; 



Fig. 11, a front view of the head. 



Fig. 12, left hand, seen from above. 



Fig. 13, a group of dorsal scales ; 



Fig. 14, a group of abdominal scales. 



Figs. 10-14, are somewhat magnified. 



3. EULAEMUS PICTUS, Grd. 



SPEC. CHAR. Head pyramido-quadrangular ; snout narrow. Tempo- 

 ral scales small, hexagonal, subcarinated. Auricular aperture rather 

 large, tubercular in front. Dorsal scales rhomboid ; lateral scales 



