54 



THE SKULL AND THE BONFS OF THE SKULL 



Longitudinal sulcus 

 Sulcus sagittalis 



Lambdoid border 

 Margo lambdoideus 



Tabular portion, or 

 supra-occipital 



Lateral sulcus 

 Sulcus transversus 



"Internal cruciform 

 ridges 



Mastoid border . 



Margo mastoideus 



Jugular eminence 

 Tuberculura jugulare 



Jugular process 



Processusjugularis 



Superior occipital fossa 



Occipital condyle 

 Condylus occipitalis 



Internal occipital pro- 

 tuberance 



Protuberantia occipi- 

 talis interna 



Inferior occipital fossa 



Internal occipital crest 

 Crista occipitalis 



Posterior condylar foramen 



Canalis condyloideus 



.Condylar portion, or 

 exoccipital 



Pars lateralis 

 Anterior condylar foramen 



Canalis hypoglossi 



Foramen magnum 

 Foramen occipitale magnum 



Basilar portion or process, or basi-occipital 



Pars basilaris 



FIG. i io. ANTERIOR (INTERNAL) ASPECT OF THE OCCIPITAL BONE. 



Os occioitale The occipital bone. 



