260 
ULULA. 
and vent is often marked at the tips of the feathers 
with grayish black spots. 
The eyes of this species are smaller in proportion 
than in the other British species. (See wood cut, 
p. 251.) The irides deep umber brown. The colour 
of the hill is yellowish pink. In the extra Euro- 
pean specimens of birds which are considered to 
be identical with this, the under parts are always 
more tinged with ochraceous. 
For our next genus we have adopted the name 
of Ulula, given by Cuvier to the Tawny Owl, as 
more appropriate, and possessing otherwise as 
strong claims as that of Symium (Savigny.) 
As a generic type, it will appear to possess charac- 
ters of a very marked description, and varying widely 
from those of the birds we have commenced with, 
and which Mr Swainson has used as typical of the 
whole group. The much stronger and less length- 
ened bill, the greater development of the organs of 
sight, the small conchal opening, and the difference 
in the structure of the wings, axe all very impor- 
tant. The ears, though having the conchal opening 
comparatively small, have an operculum propor- 
tionally larger, and more complete than any of the 
other European forms, Slrix excepted; in the 
American Barred Owl, which has been generally 
ranged with this, both on account of the similarity 
of structure and manners, the operculum is rounded, 
nearly similar in form to the true Strix , and 
