The Skunk 

 An example of "warning color" among mammals. 

 Courtesy of the Conrad Lantern &lide Company, Chicago. 



PORKFISH 

 One of the many strikingly marked and colored fish of the tropica, 

 whose colors and markings have been supposed to liave warning sig- 

 nificance. 



Courtesy of Professor W. II. Lonijley. 



339 



