PARIETAL REGION IN THE PRIMATE BRAIN 



307 



to assume a transverse position. The most posterior and at the 

 same time the best developed of these cross fm*rows may unite 

 at times with the inferior occipital. This is Zuckerkandl's Quer- 

 furche and is, as we shall see later, an important furrow. 



paneto-occiDital 



sublunate 



Querfurche 

 superior postcentra 



descending branch 



9 



Fig. 8 Right hemisphere of HylobatesMtilleri. Vindicates the dorsal branch 

 of the interparietal discussed in the text. 



Fig. 9 Right hemisphere of Hylobates Miilleri. 



The interparietal sulcus presents a more advanced condition 

 than in Semnopithecus. The ramus occipitalis is usually quite 

 distinct on account of the increase in size, and the emergence 

 of the first annectant gyrus. The continuation of the ascending 



