PLATE 26. 



Figs, i and 2. LaoJicea? neptuna. Tortugas, Florida, July, 1898. 

 Fig. 3. Laodlceal neptuna. Part of the bell-margin. 



Fig. 4. Staurophora rnertensii, half-grown medusa. Nahant, Massachu- 

 setts. 

 Fig. 5. Staurophora mertensii. Part of the bell-margin of the medusa shown 



in figure 4. 

 Fig. 6. Staurophora mertensii, mature medusa, natural size. Agassiz 



Laboratory, Newport, Rhode Island, June 9, 1895. 

 Fig. 7. Staurophora mertensii. Portion of the bell-margin of the medusa 



shown in figure 6. 

 Fig. 8. Staurophora mertensii. Aboral view of the mid-region of one of the 



radial-canals of the medusa shown in figure 6. 

 Fig. 9. Staurophora mertensii. Oral view of the mid-region of one of the 



radial-canals of the medusa drawn in figure 6. This shows the 



curtain-like folds of the gonads. 

 Fig. 10. StauroJiscus tetrastaurus, young medusa. Tortugas, Florida, July, 



1898. 

 Fig. ii. StauroJiscus tetrastaurus. Oral view of female. Tortugas, Florida, 



July, 1898. 



See page 206 for description of figures I to 3. 

 ^^^1 Drawn from life, by the author. 



