306 



THE WINGS OF MECOPTERA 



The wings of Notiothauma resemble those of Merope in their more 

 general features; but they present a much more intricate network of cross- 

 veins; and in some parts of the wing it is difficult to distinguish the longitu- 

 dinal veins from the cross-veins. A similar condition exists in the wings of 

 certain Plecoptera of which Pteronarcys dorsata (Fig. 254) is a good example. 



Fig. 318. — Notiothauma Reedi (After McLachlan by 

 Brongniart). 



