os6 The Flounder 
light-coloured place toadark. This provision of nature prevents its being 
detected by enemies, and, no doubt, saves its life on many occasions. 
3. —The Flounder, underside. 
23 
FIG. 

The fins of the flounder are also peculiar. The dorsal fin extends 
from head to tail on the left side, and increases in breadth to the 
middle, and tapers down again to the tail. It has fifty-five rays. The 
