Plate 47. 



Figs. 1 to 3. Cubaia aphrodite. Successive stages in the growth of the 

 medusa. Figure 1, one mm. in diameter; figure 3, mature medusa 

 11 mm. wide. Nassau Harbor, Bahamas, June, July, 1903. 



Fig. 4. Cubaia aphrodite. Side view of the manubrium of the medusa 

 shown in figure 3. 



Fig. 5. Cubaia aphrodite. One of the marginal lithocysts. 



Figs. 6 and 7. Cubaia aphrodite. Tentacles of a mature medusa. Figure 

 6, one of the marginal tentacles, figure 7, one of the "sucker" 

 bearing exumbrella tentacles. 



Figs. 8 to 10. Olindias tenuis. Successive stages in the growth of the young 

 medusa. Figure 8 with bell less than I mm. wide; figure 9 with 

 bell 4 mm. high; figure 10 with bell 8 mm. wide, medusa still 

 immature, but with the marginal tentacles beginning to develop. 



Drawn from life, by the author. 



