308 



ZOOLOGY 



SECT. 



just within its border. A row of small bones the supra-orbitals 

 (s. orb) bounds the orbit above, and behind is a post-orbital or 

 lateral post-frontal (pt. orb.) articulating with the frontal. Just 



trans 



dent 



FIG. 973. Skull of Lacerta agilis. A, from above ; JB, from below ; C, from the side. 

 ang. angular ; art. articular ; bas. oc. basi-occipital ; has. ptg. basipterygoid processes ; has. 

 sph. basisphenoid ; col. epipterygoid ; cor. coronary ; dent, dentary : eth. ethmoid ; ex. oc. 

 exoccipital ; ext. nar. external nares ; for. mag. foramen magnum ; fr. frontal ; int. nar. 

 internal nares ; ju. jugal ; Icr. lacrymal ; max. maxilla ; nas. nasal ; oc. cond. occipital con- 

 dyle ; olf. olfactory capsule ; opi. ot. opisthotic ; opt. n. optic nerve ; pal. palatine ; par. 

 parietal ; para, parasphenoid ; par.f. parietal foramen ; p. mx. premaxillae ; pr.fr. pre-frontal ; 

 ptg. pterygoid ; pt. orb. post-orbital or lateral post-frontal ; qu. quadrate ; s. ang. supra- 

 angular ; s. orb. supra-orbitals ; sq. paraquadrate ; supra t.l. supratemporal 1 ; supra t.2. 

 squamosal ; trans, transverse ; supr. oc. supra-occipital ; vom. vomer. The unlettered bone 

 internal to pt. orb. in A is the post-frontal. The transverse line behind fr. is a superficial 

 mark, not a suture. (After W. K. Parker.) 



behind the post- orbital is a supra-temporal bone (supra t.l), in close 

 relation to which are the paraquadrate (sq) and squamosal (supra, t.%), 



