1.80 



Comparative Morphology of Chordates 



Fig. 370. Side and dorsal views of brain of young alligator, (c) Cerebrum; (cl) 

 cerebellum; (e) epiphyseal structures; (h) hypophysis; (i) infundibulum; (ol) optic 

 lobes; (II-XII) cranial nerves. (After Herrick. Courtesy, Kingsley: "Comparative 

 Anatomy of Vertebrates," Philadelphia, The Blakiston Company.) 



DORSAL AREA 

 OF PALLIUM - 



y^ \ OF PALLIUM 



„„»„ ' °°o°o?° ° °IS gg?-. \ C ORTEX 



» J,«.°*° •£• ' % ° ' ^^ \ Hipp uc^ 



EP I STRIATUM' 



Fig. 371. Cross sections of the left cerebral hemisphere of an amphibian (Rami) 

 and a reptile (Lacerta), showing the increasing importance of the pallium as a 

 region of nervous centers — i.e., the development of a cerebral cortex. The epistria- 

 tum is a local thickening of the ventrolateral wall of the hemisphere. (Redrawn 

 from Plate, after Kuhlenbeck. Courtesy, Neal and Rand: "Chordate Anatomy," 

 Philadelphia, The Blakiston Company.) 



