550 



LACERTAE 



the skull. The latter is always well marked off from the neck. 

 The postorbital arch is complete. The temporal region is com- 

 pletely roofed over by bones dorsally, chiefly owing to the size of 



FIG. 142. Skull and lower jaw of Lacerta viridis. A, Dorsal view ; B, ventral view ; 

 C, from the left side ; D, right half of the lower jaw, from the inner side, with some 

 of the pleurodont teeth. E. P, Ectapterygoid ; F, Fr, frontal ; jug, jugal ; Lac, 

 lacrymal ; Max, maxillary ; N, Na, nasal ; N lt in B, inner narial opening ; Pal, 

 palatine ; Par, parietal ; Pmx, prem axillary ; Pr.f, prefrontal ; Pt.f, postorbital ; 

 Pt.fv, postfrontal ; Ptg, pterygoid ; Q, quadrate ; S.ang, supra-angular ; 8q, squa- 

 mosal ; Vo, vomer. 



the postfrontal (Fig. 142, pt.f z \ which fills the space between the 

 parietal and the squanioso-postorbital bridge, thus abolishing the 

 supra- temporal fossa. The squamosal is very small, placed be- 



