PREFACE TO SECOND EDITION. 



fHE text of this edition, based upon the British Museum 

 I classitication, 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 ^^^ 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, 



Se]jteinher, 1906. 



