PLATE 5. 



Fig. I. Sarsia angulata. Nassau Harbor, New Providence Island, Bahamas, 

 July, 1903. 



Fig. 2. Corynitis agassizii. Charleston Harbor, South Carolina, September, 

 1897. 



Fig. 3. Ectopleura minerva. Tortugas, Florida. 



Fig. 4. Ectopleura dumortieri, young medusa. Agassiz Laboratory, New- 

 port, Rhode Island, June, 1893. 



Fig. 5. Ectopleura dumortieri, mature male. Agassiz Laboratory, Rhode 

 Island, July, 1896. 



Fig. 6. Sarsia mirabilis var. reticulata. Nahant, Massachusetts, March 25, 

 1897. 



Drawn from life, by the author. 



