356 



Biology in America 



Two Dknizens of the Deep 

 Left. An angler fish which carries a lure on its head to entice its 

 prey within reach of its capacious jaws. From the "National Geo- 

 graphic Magazine," Vol. 21. 



Right. Chiasinodus niger, champion cannibal among fishes. From 

 Murray, "Depths of the Ocean," 



By permission of the Macmillan Company. 



of what advantage would it be to a species of fisli to have 

 light forming organs, and no means of seeing them? The 

 whole question of sight organs and light production by deep 

 sea forms is a veritable ' ' Chinese puzzle, ' ' which no one has 

 yet had ingenuity enough to solve. It is not merely a ques- 



GiANT Squid 



And skin of Avhale showing marks of giant squid tentacles. From 

 Murray, ' ' Depths of the Ocean. ' ' 



Bj/ permission of the Macmillan Company. 



