EARLY STAGES IN THE LIFE-HISTORY OF THE PLAICE (afUr 



Cunningham). 



In the earliest, uppermost, stage the body is still " round," the eyes have 

 their normal place — one on each side of the head ; and there is a large yolk- 

 sac. In the figure next below the eyes are seen to be changing their position. 

 Note the growth of the flns and the transformation of the tail. 



230] 



