560 "Journal of Comparative Neurology and Psychology. 



EXPLANATION OF PLATE IV. 



Fig. I. A projection upon the sagittal plane of the V, VII, VIII, IX and X cranial nerves, together 

 with portions of the first and second spinal nerves, of Amphiuma means. The roots and ganglia are 

 slightly schematic for the sake of clearness. In only a few cases have the positions of nerve trunks 

 been slightly changed. The scale above the figure indicates the serial numbers of the transverse sec- 

 tions employed in the reconstruction, the sections being 10 micra thick X 32. 



