ULULA. 
261 
capable of entirely closing the conchal opening. 
The rudiment of a lobe on the upper mandible is 
also important. The habits of the birds which 
we know as composing this genus are strictly 
arboreal, they live in woods, breed on trees, and 
seldom make excursions to the open country in 
search for prey. It appears to be an American 
and European form ; the allied birds we have seen 
from South Africa differ materially in the form of 
the ear, though in other proportions of the parts 
they more nearly agree. 
Tawny Owl. 
