PREFACE. 



With the present Volume the Catalogue of Passerine Birds is 

 completed, the greater part of the manuscript of the Thirteenth 

 Volume having passed through the press. The five following 

 Volumes wiU be devoted to the account of the Picarians, and are 

 all in a more or less advanced state of preparation. 



ALBERT GtJNTHER, 



Keeper of the Department of Zoology. 



British Museum (N. H.), 

 March 7, 1890. 



