ULULA. HOOTING-OWL. 



437 



though the first two, having the conch proportionally smaller, 

 might perhaps be referred to a genus apart. In Britain two 

 species are met with, one common and generally distributed, 

 the other of rare occurrence. 



The accompanying figure represents the ear of the Tawny 

 Owl, Ulula Aluco, which is proportionally larger than that of 

 the Eagle-Owl, and moreover furnished with an anterior oper- 

 culum or flap. 



