20 



ANALYTICAL KEY. 



K 



w 

 o 



o 



fc 

 o 



HH 

 GO 



i 



hH 



Q 



CO 



P 

 O 



^ 



I 



P-i 



i 



o 



a 



a w 5 c g 



1 1 1 1 S 

 8 r -s -? A 



Is 



co 



