PLATE XXIII. 



3 



X. < a 



U 



- <• 



^ ■ u 



:. i 3 



, - = 3 



I 



t t 5 

 u z y 



•/.if 



u O . 

 - fc. • 



5 IT 

 u *• 



V 



o ; 



I 





s 

 o 



^3 in 



o* ~ 



3 .2 



15 





4 >^5 



> f < 



•o*d; 



rf 2 



T c ; 



iJ 



o • • 



.J 



