PLATE 68. 



1 





X 



C/5 



o 



o 



X 



< 

 o 



z 



o 



o 

 u 



w 



DC 



^ pa 



-TT" ' 



to 



O 



3 0- 



g-1 



a 





o 



:*^.,i5,i*»* 



3 



pi 





s 



-T IS 

 CI oj 



c i; 



u 



H 

 H 

 O 



w 



W 

 DC 

 H 



o = 



6 1 



c & 

 < »- 



|2i 



s 





