1900.] SHUFELDT—OSTEOLOGY OF THE STRIGES. 669 
The Hall Committee. 
The Library Committee. 
The Phillips Prize Essay Gonmtiest 
The Librarian laid upon the table the list of donations to 
the Library, and thanks were ordered therefor. | 
The Society was then adjourned by the presiding officer. 
ON THE OSTEOLOGY OF THE STRIGES. 
[STRIGIDZ AND BUBONIDA. | 
(Plates X-X VII.) 
BY R. W. SHUFELDT, M.D. 
(Read December 7, 1900.) 
INTRODUCTION. 
Of all my published scientific papers, or in fact of any of my 
writings, the first to appear was a memoir devoted to the Os/eology 
of Speotyto cunicularia hypogea (Bull. U.S. Geol. and Geogr. 
Surv. of the Terr., Dept. of the Interior. Vol. vi, No. 1. Wash- 
ington, 1881). This contribution to the anatomy of the Burrowing 
Owl was quite complete, and illustrated by many figures given prin- 
cipally upon three full-page lithographic plates. it was done, how- 
ever, far from all civilization, the museums and the libraries, and 
therefore offered but few comparisons in its pages with the osteology 
of other species of Owls. 
This paper underwent a partial revision at my hands and appeared 
again in my work entitled Contributions to the Anatomy of Birds 
(12th Ann, Rep. of the late U.S. Geol. and Geogr. Surv. of the 
Terr. [Hayden’s]. Washington: Govt. Printing Office, Oct., 1882. 
Author’s Edition). Some little improvement was made in the 
paper, but the same plates and figures were reproduced, and no 
general comparisons included in the research. In the present 
memoir a large number of osteological comparisons have been 
made, substantially based upon the facts brought out in the original 
and revised issues of the Sfeotyzo article, and the characters found 
upon examination to present themselves in the skeletons of other 
American S¢rigtd@, specimens of which at this time are not lacking 
