386 



DISSECTION OF THE RABBIT. 



gently separating the hemispheres with the 

 handle of a scalpel. 



b. The olfactory lobes are a pair of large club-shaped 



bodies, projecting forwards from beneath the 

 anterior ends of the hemispheres. 



c. The thalamencephalon is covered by the hemi- 



spheres, and cannot be seen from the dorsal 

 surface. 



d. The corpora quadrigemina, or optic lobes, are two 



pairs of rounded elevations on the dorsal surface 

 P op 



Fig. 67. Lepus cuniculus. The brain dissected from the right side, 

 x 2. (c. h. H.) 



C, cerebellum. CC, corpus callosum. CP, choroid plexus. CS, corpus 

 striatum. H, hippocampus major. HA, frontal lobe of right hemisphere. 

 HL, left hemisphere. M, medulla oblongata. O, olfactory lobe. OP, anterior 

 optic lobe, p, pineal body. PV, pons Varolii. 



II, root of optic nerve. V, root of trigeminal nerve. VI, root of abducent 

 nerve. VIM, root of auditory nerve ; immediately in front of it is seen the 

 root of the facial nerve. XI, spinal accessory nerve. 



of the brain, and almost completely covered by 

 the hemispheres. 



e. The cerebellum is a large transversely elongated 

 mass, lying behind the hemispheres. It is 

 divided into a large median lobe, the vermis, 

 and two lateral lobes, to the outer sides of 

 which are the small rounded floccular lobes. 



