■^' ' ll ^"' ' %im 





Fig. 26. — Sectional view of photogenic organ of Acaiifhephyrn debilis (after Kemj}). 

 n, nerve; s.l., sheathing layer of cells; g, cone of refractive granules at end of nerve strand; 

 c, cellular layer; i. /., 7«. /., o. I., inner, middle and outer layer of lens. 



