tAAcJ^ 



SMITHSOlN^IAISr IlSrSTITTTTIOlSr. 

 UNITED STATES NATIONAL MUSEUM. 



BULLETIN 



OF THE 



UNITED STATES NATIONAL MUSEUM. 



l^o. 50. 



Part IV. 





WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 



1907. 



