I DEDICATE THIS VOLUME TO 

 HERMON C. BUMPUS 



DIRECTOR OF THE AMERICAN MUSEUM OF NATURAL HISTORY 



IN RECOGNITION OF HIS INVALUABLE AID AND ADVICE 



AND TO THOSE 



MEMBERS OF THE MUSEUM 



WHOSE CO-OPERATION HAS MADE POSSIBLE THE 

 WORK ON WHICH IT IS BASED 



712817 



