436 



operc. par. s. intrapar. 



Nachdruck verboten. 



The Morphology of the Occipital Region of the Cerebral Hemi- 

 sphere ill Man and the Apes. 



By G. Elliot Smith, Cairo. 



With 9 Figures. 



Since my preliminary note on the so-called "Afifenspalte" in the 

 Human (Egyptian) Brain ^) was written I have made a minute exam- 

 ination of the superficial form and the internal structure of the occi- 

 pital region in more than 400 human and an almost equally large 

 series of Simian cerebral hemispheres. The results of this investigation 

 have been embodied in a memoir which is now being published in the 

 "Records of the Egyptian Government School of Medicine (Vol. II)." 



Some of the chief ^con- 

 clusions are summarised 

 in this note: but the 

 reader must consult the 

 complete work for a fuller 

 presentment of the facts 

 and the arguments which 

 have led me to adopt the 

 views stated here. 



It is easy to select 

 examples from the series 

 of Egyptian and Soudanese 

 brains in my possession in 

 which the pattern formed 

 by the occipital sulci on 



inc. par. occ 



s. occ. parames 



s.i.l.(r.d.) 



s. 1. m. 



s. i. 1. 



s. infrastr 



Fig. 1. The lateral aspect 

 of the right occipital region of the 

 braiu of :i male adult Egyptian. 



s. lunat. 



operc. occ 



the lateral surface of the hemispheres in individual Anthropoid Apes 

 is so exactly reproduced that the identity of every sulcus is placed 

 beyond all reasonable doubt. The lateral aspect of the right oc- 

 cipital region of an adult Egyptian Fellah represented in Figure 1 



1) Anat. Anzeiger, Bd. 24, No. 2/3. 



