VUl INTRODUCTION. 



has rendered the re-writing of this group much less laborious than 

 it would otherwise have been. I do not agree with him on all 

 points ; but where we are at variance it is generally in connection 

 with closely allied forms, which I have endeavoured, as much as 

 possible, to treat as geographical races. 



The genus Zosterojis has been worked out entirely by Mr. R. 

 Bowdler Sharpe, and I am only responsible for the diagnoses of 

 the subfamily and its genera. Once more my thanks are due to 

 the last-named gentleman for many acts of courtesy, and for 

 numerous additions and corrections which became necessary since 

 my departure from London. 



H. GADOW. 



Carubridgp, 

 February 1884. 



