53 
bed and mottled owls, etc. 
solete ; periphery sharply angulated, subcarinated ; 
base flattened ; subumbilicated columella grooved ; 
aperture half the length of the shell. 
Locality. Banks of the Patuxent river, Mary- 
land. J 
This species is remarkable for it smooth surface, 
and white, ivory-like appearance. It is rare. 
A few Facts in relation to the Identity of the Red and 
Mottled Owls , df-c. By Ezra Michener, M. D. 
Read July 3d, 1838. 
It is an extraordinary fact that, up to the present 
time, the identity of the red and mottled owls should 
not have been satisfactorily settled. Notwithstand- 
ing the imposing authorities of Buonaparte, Audu- 
bon, and Nuttall, and their extensive opportunities 
for observation, and the very general concurrence 
ot other able ornithologists on the affirmative side 
of the question, I still think there is cause to doubt 
the correctness of their conclusion. I have long 
doubted the identity of those birds, and within the 
last four years have several times invited the atten- 
tion of individual members of the Academy to the 
subject. J 
My observations, indeed, removed any doubt in 
ie case, and I unhesitatingly restored Wilson’s 
