56 COLOR CHANGES IN ANIMALS 



5» 



Fig. 40. A flat-fish, Paralichthys albiguttus, on checker-board 

 patterns of different sizes. All figures are from the same fish. 

 The length of this fish was 14 cm.; the sides of the checker-board 

 squares were 2 mm., 5 mm., 10 mm., and 20 mm. Mast, Bull. 

 United States Bur. Fish., 1916, 34, pi. 21. 



