THE SKULL 



89 



Excepting in the naso-ethmoidal region, the whole chondro- 

 cranium usually becomes almost obliterated by an extensive process 



trans 



art 



ilenl 



any 



FIG. 71. SKULL OF Lacerta agilis (from Parker and Haswell's Zoology, 

 after W. K. Parker). 



A, from above ; B, from below ; C, from the side, ang, angular ; art, articular ; 

 bas.oc, basioccipital ; bas.ptg, basipterygoid processes; bas.sph, basi- 

 sphenoid ; 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, lachrymal ; max, maxilla ; 

 nas, nasal; oc.cond, occipital condyle ; olf, olfactory capsule; opi.ot, opis- 

 thotic ; opt.n, optic nerve; pal, palatine; par, parietal; para, para- 

 sphenoid ; par.f, parietal foramen ; p.mx, premaxillas ; pr.fr, pref rental ; 

 ptg, pterygoid ; pt.orb, postorbital ; qu, quadrate ; s.ang, supra-angular ; 

 s.orb, supraorbitals ; sq, squamosal ; supra.t. 1 , supra.t.-, supratemporals 

 (" paraquadrate," Gaupp) ; trans, transverse bone ; supra.oc, supraoccipital ; 

 vom, vomer. 



