486 



THE BRAIN 



the culmen constitutes a median connecting piece between the two anterior 

 crescent ic lobules of the hemispheres ; the declive stands in the same relation 

 to the posterior crescentic lobules ; and the folium vermis is the connecting 

 band between the superior se/nilunar lobules of the hemispheres. 



Lingula. The lingula can be seen only when the posterior boundary of 

 the anterior notch is pushed backwards. It consists of four or five small 

 folia, continuous with the grey matter of the vermis, prolonged upwards 

 on the surface of the anterior medullary velum, in the interval between 

 the brachia conjunctiva. 



Lobus Centralis with its Alae. The central lobule lies at the posterior 



Central lobule 

 Brachium conjunctivum 



Anterior medullary velum 



Brachium pontis 

 Posterior medullary^ j 



velum v 



Nodule 



Flocculus 



Horizontal sulcus 



Inferior semilunar lobule 



Lobulus gracilis \ 



Biventral lobule 



Pyramid 



Horizontal sulcus 



Lobulus gracilis 

 Biventral lobule 



Uvula Tonsil 

 Tuber vermis 



FlG. 197. Lower surface of the Cerebellum. The tonsil of the right side 

 has been removed so as to display the posterior medullary velum and 

 the furrowed band. 



end of the anterior notch, and is largely hidden by the culmen. It is a 

 little median mass which is prolonged laterally for a short distance round 

 the semilunar notch in the form of two expansions, termed the alee, 



Lobus Culminis. The cnlinen monticnli constitutes the summit or 

 highest part of the monticulus of the vermis. It is prolonged laterally on 

 each side into the corresponding hemisphere as the anterior crescentic 

 lobule. This is the most anterior subdivision on the upper surface of the 

 hemisphere. The two anterior crescentic lobules, with the culmen 

 monticuli, form the lohiis culininis cerebelli, 



Lobus Declivis. The decline monticuli\\o& posterior to the culmen, from 

 which it is separated by a distinct fissure, and it forms the sloping part or 

 descent of the monticulus of the vermis. On each side it is continuous 



