188 



NORTH AMERICAN INSECTS. 



Sphinx. After its last transformation into a winged insect 

 it becomes a Hawk-moth, so called because while suckin^ 

 the nectar from the cups of flowers it is hovering in the air 

 like a hawk. It is also called by some the Humming-bird 

 Hawk-moth, from the humming sound which it produces 

 with its wings, and by rubbing its horny proboscis upon the 

 small glassy membrane beneath it. 



