THE SKULL 



89 



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

 craniura usually becomes almost obliterated by an extensive process 



trans 



Fig. 71. — I^ki'lt. of Larerta nijilin (from Parker and Haswell's Zoology, 

 after W. K. Parker). 



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

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

 sphenoid ; rol, epipterygoid ; cor, coronary ; dent, dentary ; eth, ethmoid ; 

 ex. or, exocoipital ; ext, nar, external nares ; for. mag, foramen magnum ; 

 /)■, frontal ; int. nar, internal nares ; ju, jugal ; /cr, lachrymal ; max, maxilla ; 

 nas, nasal; oc.cond, occipital condyle; otf, olfactory capside ; opi.ot, opis- 

 thotic ; opt. 11, optic nerve; pal, palatine; par, parietal; para, para- 

 sphenoid ; //'( /•./, parietal foramen ; p. mx, premaxillfe ; pr.fr, prefrontal ; 

 ptg, pterygoid; jjt.orh, postorbital ; qu, quadrate; ".ang, supra-angular; 

 s.orh, supraorbitals; sq, squamosal; supra.t.^, suj>ra.t.-, supratemporals 

 (" paraquadrate," Gaupp) ; <ra7js, transverse bone; (.H^ra. oc, supraoccipital ; 

 rom, vomer. 



