Plate 33. 



Fig. 1. Clytia folleata, mature female. Great Salt Bank, Anguilla Cay, 



Bahamas, February 25, 1893. 

 Fig. 2. Clytia folleata, young medusa caught in the same tow with the 



medusa represented in figure 1. The gonads are still migrating 



outward along the radial-canals. 

 Fig. 3. Clytia folleata, mature male. Tortugas, Florida, June, 1898. 

 Figs. 4 and 5. Phialidium languidum, successive stages in the growth of 



the young medusa. Agassiz Laboratory, Newport, Rhode Island, 



July, 1892. See page 269. 

 Fig. 6. Phialidium languidum, mature male. Eastport Harbor, Maine, 



August 14, 1897. 

 Figs. 7 and 8. Phialidium languidum (southern form). Mature female. 



Tortugas, Florida. June to July, 1897-98. Figure 8, part of the 



bell-margin of the medusa represented in figure 7. 

 Figs. 9 to 11. Phialidium discoidum. Successive stages in the growth of 



the medusa. Figure 11, part of the bell-margin of the medusa 



shown in figure 9. See page 272. 



Drawn from life, by the author. 



