Plate 32. 



Figs. 1 to 3. Clytia volubilis, found growing upon the stems of Eudendrium 

 in tide-pools near the Agassiz Laboratory, Newport, Rhode 

 Island, July 20, 1895. Figure 1' shows the natural size of the 

 hydroid shown in figure 1; figure 2, one of the calycles; figure 

 3, one of the gonangia showing medusa-buds. See page 262. 



Fig. 4. Clytia volubilis. Drawing of a medusa immediately after its escape 

 from the gonangium of the hydroid shown in figure 1. 



Fig. 5. Clytia volubilis, from a young medusa found in the ocean at New- 

 port, Rhode Island, June, 1892. 



Fig. 6. Clytia volubilis, half-grown medusa from Newport, Rhode Island, 

 June, 1892. 



Fig. 7. Clytia volubilis (?). Charleston Harbor, South Carolina, September 

 ' 8, 1897. 



Figs. 8 and 9. Tiaropsis diademata, young medusa. Nahant, Massachu- 

 setts, March 25, 1897. Figure 9 shows one of the marginal sense- 

 organs. 



Drawn from life, by the author. 



