122 GEORGE W. BARTELMEZ 
5 
Fig. 5 A section taken through the caudal end of the lobi faciales at the 
level of entrance of the lateral line Xth root. The relations of the internal and 
external arcuate fibers and the position of the nucleus motorius tegmenti are 
shown, and especially the relation of the latter to the internal and external arcuate 
fibers. 
