PLATE 167. 



x^i^M'gh 



Oi 



w 

 (X 

 p 

 o 



a 



a 



< 



m 

 <: 



o 

 o 



< 



2 



w 

 w 



X 

 H 



H 



/ 



X 



\ 



'^i^'C 



v5g. 



