CHANGES IN SHADE, COLOR, AND PATTERN IN FISHES. AND 



THEIR BEARING ON THE PROBLEMS OF ADAPTATION 



AND BEHAVIOR, WITH ESPECIAL REFERENCE TO 



THE FLOUNDERS PARALICHTHYS AND 



ANCYLOPSETTA 



By S. O. Mast 



Contribution from the United States Fisheries Biological Station, Beaufort, N. C, 

 and the Zoological Laboratory of the Johns Hopkins University 



97867°— vol 34—16 12 173 



