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 



A 



eacl.nar 



t reins 



7 



n 



ba*f*ff~". 7 J~; 



pig cot 



f > --T -, .tang 



vj>*fc> -" 



ar^ 



an 



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

 unii, angular; art. articular ; kas.uc. basi-occipital ; fca.s-. ply. basipterygoid processes; has. 

 sph. basisphenoid ; col. epipterygoid ; cor. coronary ; ilent. dentary : eth. ethmoid ; <.*. or. 

 exoeeipital ; ext. nar. external nares ; for. mag. foramen magnum ; Jr. frontal ; int. nar. 

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

 dyle ; o/f. olfactory capsule ; opi. ot. opisthotic ; opt. n. optic nerve ; pal. palatine ; par. 

 parietal ; para, parasphenoid ; par.}', parietal foramen ; p. m*. premaxilke ; pr.fr. pre-1'rontal ; 

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

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

 squaniosal ; trans, transverse ; supr.oc. supra-occipital; vom. vomer. Tlie unlettered bone 

 internal to pt. orb. in A is the post-frontal. The transverse line behind// 1 , 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 (,s^/>w. t.2), 



