PLATE 7. 



Fig. I. Slabberia strangulata, mature male. Charleston Harbor, South 



Carolina, September 8, 1897. 

 Fig. 2. Slabberia strangulata, half-grown medusa. Charleston Harbor, 



South Carolina, September 1 1, 1897. 

 Fig. 3. Slabberia strangulata, young medusa. Charleston Harbor, South 



Carolina, September 7, 1897. 



Fig. 4. Slabberia strangulata var. fragilts. Tortugas, Florida. 

 Fig. 5. Zanclea gemmosa, young medusa. Agassiz Laboratory, Newport, 



Rhode Island, September 17, 1892. 



Drawn from life, by the author. 



