IV EGGS AND LARV^ AND THEIR DEVELOPMENT 105 



FIG. 59 



FIGS. 59-62. Four stages in the transformation of the Flounder. Fig. 59, the larva, 

 Y/-Q inch long, two days after hatching ; the yolk not yet all absorbed. Fig. 60, 

 the same six days after hatching ; the yolk all absorbed, and the mouth open ; 

 -jV^ inch in length. Fig. 61, specimen in a transition stage, with the left eye 

 near the edge of the head : length -fa inch. Fig. 62, specimen in which the 

 transformation is nearly complete ; the left eye on the edge of the head ; same 

 length. 



eyes, in plaice and others the left, in turbot and others the right, 

 moves out of its first position, rises first to the edge of the head, 



