THE SKULL 



95 



^* fl7/- 



Fif;. 77. — Skull of a Wild Duck {Anas hoschas). A, from above ; B, from 

 below ; C, from the side. (From a preparation by W. K. Parker). 



n.J.s, alisphenoid ; ag, angular ; ar, articular ; a.p.f, anterior palatine foramen ; 

 h.t, basitemporal ; h.o, basioccipital ; h.pg, basipterygoid ; S.s, basisphenoid ; 

 d, dentary ; e.n, external nostrils; eth, ethmoid; e.o, exoccipital ; e.w, 

 Eustachian aperture ; /r, frontal ; /.m, foramen magnum; i.c, foramen for 

 internal carotid artery ; j, jugal ; Ic, lachrymal ; mx.p, maxillopalatine 

 process ; mx, maxilla ; n, nasal ; n.px, nasal process of the premaxilla ; px, 

 premaxilla ; p, parietal ; pa, presphenoid ; pg, pterygoid ; pi, palatine ; ^j.jf, 

 ; internal nostrils; q, quadrate; q.j, quadratojugal ; ,«g, squamosal; s.o, 

 supraoocipital ; ty, tympanic cavity ; v, vomer ; II, foramen for optic nerve ; 

 V, for trigeminal ; IX, X, for glossopharyngeal and vagus ; XII, for 

 hypoglossal. 



