PLATE 13. 



Fig. i. Protiara formosn, mature medusa. Tortugas, Florida, May 21, 1907. 



Oral view of female. 

 Fig. 2. Protiara forniosa. One of the marginal cirri showing the chordate 



entodermal cells. 

 Figs. 3 to 5. Podocoryiif fulgnraiis. Agassiz Laboratory, Newport, Rhode 



Island, September, 1892. 

 Fig. 6. Turns pileata, young medusa. Agassiz Laboratory, Newport, 



Rhode Island, September 25, 1896. 

 Fig. 7. Turris vesicaria, mature medusa. Eastport, Maine, August, 1897. 



Drawn from life, by the author. 



