Plate 39. 



Fig. I. Eutima mira. Charleston Harbor, South Carolina, September II, 

 1897. 



Fig. 2. Eirene variabilis, young medusa. Figure 2', quadrant of the bell- 

 margin of the same medusa. Tortugas, Florida, June 20, 1899. 



Fig. 3. Phortis pyramidalis, young medusa. Great Abaco Island, Bahamas, 

 March 9, 1893. 



Fig. 4. Phortis pyramidalis, intermediate stage in the growth of the medusa. 

 Great Abaco Island, Bahamas, March 9, 1893. 



Figs. 5 and 6. Phortis pyramidalis, mature medusa. Figure 6, a part of 

 the bell-margin of the medusa shown in figure 5. Tortugas, 

 Florida, June, 1897. 



Drawn from life, by the author. 



