564 'Journal of Comparative Neurology and Psychology. 



EXPLANATION OF PLATE VI. 



Fig. II. Cross-section through the gill-cleft. Section 960. X 19. 



Fig. 12. Cross-section at the level where the r. intestino-accessorius breaks up into its branches. 

 Section 1090. X 19. 



Fig. 13. A projection upon the sagittal plane to show chiefly the olfactory, optic and eye-muscle 

 nerves. The outlines of the acustico-facial, gasserian and dorsal lateral line ganglia are drawn in their 

 correct relations. 



Figs. 14 to 18. Projections upon thesagittal plane of the r. hyomandibularis VII in the region where 

 it divides into its chief branches. These are from four different individuals. Figs. 14 and 15 are 

 from the same individual. All are represented as seen from the right side. These sections are to 

 show primarily the variable mode of fusion between the anastomosis X ad VII and the r. jugularis VII. 



