JOURNAL OF COMPARATIVE NEUROLOGY. Vol. X. 



Lateral Recess Fourth Ventricle 



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( f ■ 



Wall of Lateral Recess Stilmrachnoid Arachnoid 



(Marsupium) Cavity 



Fig. 35 



V 



Fig. 36 



■ Sec, Rhomboiaal Lip 

 Vagus 



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Fig. 37 



OHongata \V^ 



Flo, cull, _A 



Fig 38 



1/ 



Sec. Rhom/m- 

 dot Lip 



Sec. Rhoiii- 

 kndal Lip 



