C T. VAN YALKENBÜRQ, ' Concerniug the mesencephalic nucleus and root of the N. Triffeminu; 



Fig. 13. Alligator sklerops. 



Fi^. 14, Eunectes murinus. 



Fig. 15. Vaiaims 5; 

 PioieMings Roy.il Acad. AmUerdara. Vol, XIV. 



Fig 20, Onychogale frenata. 



