Report of U. S. National Museum, 1920. 



Plate I. 



3 

 US 

 to 



3 



< 



< 



z 



CO 



u 



< 

 I- 



o 



UJ 



H 



Z 



D 



d 



z 



o 



_J 



D 



OQ 



>- 

 q: 

 o 



-I 

 < 



D 

 I- 

 < 



z 



u. 

 o 



I- 

 z 

 o 

 oc 



li. 



o 



CO 



