20 



ME. G. A. BOULENGER ON LIZAEDS 



case these spots will not, later in life, arrange themselves in longitudinal series. I 

 have before me a young example, one day old, from Churt, which does not differ from 

 its mother in the character and arrangement of its markings (longitudinal dark bands 

 and ocellar spots). Further, in the young of the so-called var. rubra the dorsal region 

 does not bear any ocelli. The " argus " livery is not a constant one for the young, as 

 the descriptions of some authors would lead us to believe. In addition to ocelli the 

 very young, Avhich are grey or greyish brown above and white beneath, often have 

 a continuous or interrupted yellowish or Avhite vertebral streak *. 



In a number of young, 30 to 35 millim. long from snout to vent, taken in August 

 at the same spot in Luxemburg, I find the following variations (text-fig. 7). 



Test-figure 7. 



!;>■.' 



i: I.- 



^M 



■i^'i 



"■■ ^ 



Young Lucerta agilis from Moudorf, Luxemburg. 



In all of them three dark longitudinal bands run along the body and tail ; the 

 median, 8 to 10 scales broad, much narrower than the pileus ; the lateral, about 

 6 scales broad, occupies the space between the upper border of the upper temporal 

 shield and the middle of the posterior border of the tympanum. In most of them 

 the dark median band is divided on the nape by a narrow light streak, which in some 



* It is very remarkable that among the very numerous adult specimens I have examined from England 

 and Northern and Central Europe, I should never have come across one iu which this streak has persisted 

 uninterrupted, as in the var. sjiinalis. 



