PLATE 73. 



Fig. i. Rhizostoma pulmo, 0.75 natural size. Zoological Station, Naples, 



Italy, November 29, 1907. 

 Fig. 2. Cotylorhiza tuberculata, 0.75 natural size. Zoological Station, Naples, 



Italy. November 30, 1907. 



Drawn from life, by the author. 



