72 



BULLETIN 17 5, UNITED STATES NATIONAL MUSEUM 



1 1 «^ 



c3 3 



lO O ID 



<^ ^ to 



cH iH 1-1 



2 5 S 





s s 



a e 



^ ^^ 



f O ■§ 

 Is 



^ s 



2 -^ 



B s 



'^ " .2 ! 



^ s: o s; 



O 2 





