376 REPTILES xiv. 5 



naming of some of the smaller bones round the orbit and above 

 the quadrate is a matter of controversy. 



The margins of the palate are formed by flanges of the premaxillae 



Fig. 213. Skull and lower jaw of Lacerta. 



A, dorsal view; 13, ventral view; C, from left side; D, right half of lower jaw from inner 

 side, showing the pleurodont arrangement of the teeth. E.P. ectopterygoid; Ep.P. epiptery- 

 goid; F, Fr. frontal ; jug. jugal; Lac. lachrymal; Max. maxillary; N, Na. nasal; N, in B, 

 inner narial opening; Pal. palatine; Par. parietal; Pmx. premaxillary ; Pr.f. prefrontal; 

 Pt.f. post-orbital; Pt.f 2 . post-frontal; Ptg. pterygoid; Q. quadrate; S.ang. supra-angular; 

 Sq. squamosal; '. 'o. vomer. The regions of persistent cartilage are not shown in detail. 



(After Gadow.) 



and maxillae and the small ectopterygoids. The internal nostrils 

 usually lie forwards between the maxillae, vomers, and palatines. 

 More posteriorly the floor of the skull is made up mainly by pterygoid 

 bones and the parasphenoid, which is partly fused with the lower 

 surface of the basisphenoid. Occipital bones surround the foramen 

 magnum and make up the single occipital condyle, which in some 



