PLATE 12. 



Fig. i. Pandea violacca, mature female. Tortugas, Florida, June 5, 1906. 



Fig. 2. Turris vesicaria, young medusa. Eastport, Maine, September 19, 

 1898. 



Fig. 3. Turris vesicaria, half-grown medusa. Agassiz Laboratory, New- 

 port, Rhode Island, June 24, 1893. 



Fig. 4. Turris pileata, half-grown medusa. Agassiz Laboratory, Newport, 

 Rhode Island, July 13, 1895. 



Fig. 5. Podocoryne fulgurans. Basal part of one of the marginal tentacles. 



Figs. 6 to 9. Podocoryne fulgurans. Views of manubrium showing medusa- 

 buds. Agassiz Laboratory, Newport, Rhode Island, September, 

 1892. 



Drawn from life, by the author. 



