PLATE 67. 



Fig. i. Cyanea caplllata var. fulva, young medusa 9 mm. in diameter. 

 Showing its habit of resting with lips spread out over bottom of 

 aquarium and its tentacles elevated, while at the same time the 

 bell pulsates vigorously. Agassiz Laboratory, Newport, Rhode 

 Island, June, 1895. 



Fig. 2. Cyanea ca pillata var. fulva. Oral view of quadrant of bell of a young 

 medusa 10 mm. in diameter, gt. internal gastric cirri. Agassiz 

 Laboratory, Newport, Rhode Island, June 10, 1895. 



Fig. 3. Cyanea capdlata var. fulva. Oral view of a medusa 15 mm. in 

 diameter showing gastrovascular pouches (light blue) of subum- 

 brella. Newport, Rhode Island, June, 1895. 



Fig. 4. Aurellia aurita, young medusa 7 mm. in diameter, showing develop- 

 ment of radial-canal system during formation of ring-canal. 

 Tortugas, Florida, June 4, 1907. 



Drawn from lite, by the author. 



