Table of Contents. vii 



PLATES. 



I. Facing p. 84. Feathers from Three Subspecies of Pedioecetes. 



The Committee on Publications declares that each paper of this volume 

 was distributed on the date indicated on its initial page. The Index, 

 title page, and minutes of meetings for 1917 (pp. i-xv; 199-203) were 

 issued on February 21, 1918. 



