SIMIA SATVRUS, THE ORANG-OUTANG 531 



dense huiulK' oi crossinij; lilx'rs fonncctt'd dorsally with the optie tracts and 

 \entiall\ with tlu- uptic nerves. The optie thalamus is separated from the 

 most \-entral portion ol the endbram eonstitutmii the globus pallidas ( Glp) 

 by a dense bundle ol libers many ol which occupied positions in the cerebral 

 peduncle. This bundle ol libers is the internal capsLile (Cm). Dorsal to 

 the optic chiasm is a slight bundle oi decussating libers known as the 

 supraoptic decussation ol Me\nert. Tlu' other structures ol tojjographical 

 interest in the section are indicated by appropriate letters in the caption 

 accompanying tlie tigure. 



