126 THE AMERICAN NATURALIST. 
slight amount of data that we have, the numerical preponder- 
ance of the many-veined type has no significance. 
It is easy to conceive of the development of the wings of all 
living insects from forms allied to Xenxoneura, by the different 
methods of specialization which we have pointed out; for it 
will be seen that the wing of this insect closely resembles our 
hypothetical type. And we can say, therefore, that the paleon- 
tological evidence does not contradict the conclusions drawn 
from a study of the ontogeny of living forms. 
