SMITHSONIAN EXPLORATIONS, I93O 



155 



u 



o 

 be 



o 



Q 



co 



rt 



.2 



rt 





o 

 Q 



o 









o 



O 

 ^3 



rt 



a! 



<U 

 ■*-» 

 rt 

 u, 

 O 

 u 



a 







11 



