Fijr. 2."). DiaKranis to show the position of the nervous system in Dolicho- 

 glossus. Nervous system shown by heavy lines below the surface. 



1. Longitudinal section. 2. Cross section throuRh the proboscis. 

 3. Central portion much enlarged. 4. Another part of the surface. 

 .'). Neural epithilium much enlarged. 



