NERVOUS SYSTEM. VERTEBRATA. 



287 



shallow oblique sulci extend across the broad gyrus which 

 separates the postsylvian sulcus and the Sylvian fissure. 



The great corono-lateral sulcus is parallel to and co- 

 extensive with the suprasylvian sulcus, from which it is 

 separated by a broad gyrus. A large ansate sulcus and 

 several smaller branches spring from the angle of junction 

 of the coronal and lateral sulci. This region is further 

 complicated by irregular compensatory ansate sulci. A 



URS. LOZ 



short oblique sulcus (fig. 162, A) is found on the gyrus 

 separating the lateral from the postlateral sulcus. The 

 latter is very well-developed (fig. 161). An exceedingly 

 deep entolateral sulcus is found (fig. 162) near the posterior 

 third of the mesial edge of the hemisphere. Posteriorly it 

 is prolonged into a sulcus which is placed exactly on the 

 caudo-lateral edge of the hemisphere [and is hence not 



