PLATE 58. 

 All figures are of Carybdea marsupialis. 



Fig. i. Mature medusa, 1.25 times natural size. Naples Zoological Station, 



December 5, 1907. 



Fig. 2. Sense-club seen from exumbrella side. 

 Fig. 3. Side view of sense-club. 



Fig. 4. One of the velar canals showing its branches. 

 Fig. 5. One of the gastric cirri showing its brush-like terminal branches. 



Drawn from life, by the author. 



