242 



Lacertidse. 



which may have a tendency to form cross-bands as in var. tiliguerta 

 {tigris of Eimer). Sometimes the black predominates to such an 

 extent as to constitute the ground-colour on which the green appears 

 as small round or vermicular spots, as in the var. nigriventris, or the 

 lizard from Filf ola Eock. Head pale brown above, with small or large 

 black spots or vermiculations ; lips often black, each shield with a 

 light spot. White or pink beneath, throat with grey or blackish 

 markings, the whole or the sides of the belly spotted with black ; blue 

 spots on the outer ventrals. Tail with regular cross-bars of black 

 and white ocellar spots, most marked on the sides. 



The specimens from the Scuola islet, near Pianosa, have more black 

 on the belly than the others and closely resemble the var. nigriventris. 



There is no marked sexual coloration-dimorphism, and the young, 

 which I have seen in the Florence Museum, is reticulated, not streaked. 



Measurements (in millimetres) : 



