PREFACE TO SECOND EDITION. 



fHE text of this edition, based upon the British Museum 

 classification, remains very much as originally printed, 

 while attention is drawn to the lists of " Additions and Altera- 

 tions " and to " Species and Sub-Species Recently Described 

 as New." 



The photographs are from John Gould's " Birds of Australia," 

 and I am indebted to my friend, Mr. F. Verrell Heath, for his 

 assistance. The dimensions provided are approximate. 



I found it impossible to get at the authors' meanings of a 

 few of the genera and species. My thanks for help are due to 

 my friends Messrs. E. R. Pitt and W. J. Stephen. 



Professor T. G. Tucker, Litt. D., in the hours of a busy life, 

 found time to place the accents upon the words and read the 

 proof-sheets of derivations here supplied — in general, to act as 

 my adviser. This appeals to me as a contribution of much 

 value, and my best thanks go very willingly to him. 



R. H. 



Melbourne, 



September, 1906. 



