332 G, E. COGHILL 



Fig. 61 Early swimming stage (No. 496, section 1-5-15). X 500. From the 

 same series as figures 55 to 60, at the level of the middle of the auditory vesicle 

 and endolymphatic appendage (End). This should be compared with figure 6. 

 It shows the relations of the descending facial and ascending postauditory lateral 

 line components in this early stage; also the fasciculus solitarius {Fas. Sol.) and 

 the descending auditory fibers {VIII Des.). Mesenchymal cells are now pressing 

 in between the brain and the otocyst. 



