CHAP. X.] 



THE SKULL OF .VJX. 



129 



Fig. 49. — Vertical, longitudin.il, median section of a young human skull, with the first 

 dentition, ^. As m the other sections of skulls figured, the mandible is displaced 

 downwards, so as to show its entire form -Pyix premaxilla ; MT maxillo- 

 'turbinal : ET ethmo-turbin.nl ; ME ossifi-^d portion of the mesethmoid ; Nn nasal ; 

 eg crista galli of the me ethmoid ; OS orbitosphenoid, or lesser wing of the 

 sphenoid ; AS alisphenoid, or greater wing of the sphenoid ; Fr frontal ; /\i 

 pariecal ; SO supraoccipital ; M mastoid portion of the periotic ; Sq squamosal ; 

 J^er petrous portion of the periotic ; the large foramen below the end of the line 

 is the internal auditory meatus, the small depression above it is the nearly- 

 obliterated floccular fossa. E.vO exoccipital, the line points to the condylar fora- 

 men \ /ni foramen magnum ; BO basioccipital ; ^^9 basisphenoid ; st sella turcica ; 

 FS presphenoid, ankylosed with the basisphenoid, forming the "body of the 

 sphenoid ;" Fi pterygoid ; PI palatine ; Vo vomer ; Mx maxilla ; j symphysis of 

 mandible ; cp coronoid process ; at articular condyle ; a an^^Ie ; sh stylohval, nr 

 " styloid process of temporal ; " c/t ceratohyal, or lesser cornu of hyoid ; bh basi- 

 hyal, or body of hyoid ; th thyrohyal, or greater cornu of hyoid. 

 K 



