Journal of Comparative Neurology and Psychology. 



Vol. XVil, Plate H- 



s 



Fig. I 



■ 



JI „ I I I U LD 



P^g- 3 



Fig. 4 



Fig 6 



^ BC 



V \ ^XaX \ \ AV \ 1 1 I4ffl 



Ftg. 7 



D 



