194 Papers from the Marine Biological Laboratory at Tortugas. 



Fig. 24. Small part from edge of basal part of a papilla on posterior surface of an electroplax 

 from C region of 42-day-old Gymnarchus. Shows a single nerve, ending in a 

 somewhat elongate and branched end-plate in electric layer. Outer crowded 

 mass of granules stained deeply witheosin; larger inner granules not stamed. 



X 1500. ^ ^ , , cu 



Fig. 25. Small part of edge of another part of anterior surface of same electroplax. bhows 

 a nerve fiber dividing and each branch ending in typical club-shaped nerve 

 ending of Gymnarchus. X 2200. 



