ERRATA. 
Plate VI should be Plate V 
99 
VII 
99 
99 
VI 
99 
VIII 
99 
99 
VII 
99 
IX 
99 
99 
VIII 
99 
X 
99 
99 
IX 
99 
XI 
99 
99 
X 
99 
XII 
99 
99 
XI 
