NERVOUS SYSTEM. VBRTEBRATA. 459 



A similar section was made by Prof. D. J. Cunningham 

 to show that the anterior exposed part of the in.uk in the 



Figs. 252. ( X f.) 



INS. (HlOOt* PART) 



\ 

 fNS. (EXPOSED PART) SULC.ORB. 



Anthropoid Apes presents the same relation to the claus- 

 trum and lenticular nucleus as the human insula does. 

 D. J. Cunningham, Journ. of Anat. & Phys., vol. xxxii. 

 1898, p. 11. 



D. 673. Two casts of the cranial cavity of a Chimpanzee (Anthro- 

 popithecus troglodytes). 



D. 674. Two casts of the cranial cavity of a smaller Chimpun/.>" 

 (Anthropopithecus troglodytes) . 



Family 



D. 675. The brain of an early human foetus (about 2 months ?) in 

 situ in the head, showing the post-mortem wrinkling of tin- 

 thin neopallium, which is generally regarded (probably 

 erroneously) as a system of " transitory fissures." 



The roof of the right hemisphere has been removed 

 so that the corpus striatum can be seen in the lateral 

 ventricle. 



The corpora quadrigeiuina are exposed. 



