■■'■'■■■*f J-- .'■' / < > ■:,?-..*'■■•■■ 



Fig. 17. — NoctUuca milinris, showing photogenic granules in cytoplasm, n, nucleus; 

 c, cytoplasmic strands containing photogenic (large) and other (small) granules; p, pharynx; 

 /, flagellum; o, oral groove; i, tentacle; s, spines at base of tentacle; v, vacuoles. Drawn by 

 E. B. Harvey. 



