302 



which I examined (Nectnrus and Cryptobranchus) just as in his 

 urodela (Siren and Molge) the facial nucleus lias shifted a good deal 

 caudad from its root entrance to the level of I he entrance of the 

 glossopharyngeus root, where it constitutes a unity with the motor 

 column of the glossopharyngeus and vagus, a condition which is 

 the motor (reflectory) expression of the union of the sensory nerve 

 roots of the VII and IX on the level of the IX^'' entrance. 



On the contrary in my Rana and Bufo the nucleus facialis keeps its 



3 



CJO, 



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33 



CO 



