Preface. 
VII 
quoted in our Introduction, pp. 39 and 47. For the transmission of specimens 
we are much indebted to the following gentlemen: Prof. W. Blasius of Bruns- 
wick, Dr. Bilttikofer of Leyden (now Eotterdam), Dr. A. Dubois of Brussels, 
Mr. Gurney of Norwich, Mr. Hartert of Tring, Prof. Hertwig of Munich, Prof. 
V. Koch of Darmstadt, Dr. v. Lorenz of Vienna, Mr. Pleske of St. Petersburg, 
Dr. E. P. Eamsay of Sydney, Prof. Eeichenow of Berlin, and Mr. W. Schliiter 
of Halle; as well as for special information to Prof, de Groot of Leyden, Eesident 
Jellesma of Manado, Prof. Kern of Leyden, Prof. Newton of Cambridge, 
Dr. Oustalet of Paris, Dr. Eiedel of the Hague, and Count Salvadori of 
Turin. Inspector Lehnig of the Dresden Museum has assisted us in drawing 
up the lists of Geographical Distribution and of Local Avifaunas, the alphabetical 
Index and list of abbreviations, and has supported us in other ways; as has also 
Miss C. S. Fox of London by her aid in the correction of the proofs. 
Should we, unhappily, have forgotten any one in rendering our thanks, we 
apologize for such an omission. 
Finally our sincere thanks are due to the Publishers for their compliance in 
all our wishes as to the fashion of the hook. 
Eoyal Zoological Museum, Dresden, April 30^^, 1898. 
