6 10 Journal of Comparative Neurology and Psychology. 



Fig. 9. Three sagittal sections of the tectum of Scyllium stellare. A, nearly 

 median, showing the greatest extent of the nucleus tecti. B, through the 

 lateral part of the aqueduct. The mesencephalic bundle is seen passing 

 beneath the trochlearis. C, farther laterad. The fibers of the decussatio veil 

 turn downward and forward as the tertiary gustatory tract. The radix 

 mesencephalica passes caudad on the inner surface of the acusticum. X 16. 



