FREFACE vii 



In conclusion, he must take the opportunity of acknow- 

 ledging the invaluahle assistance afforded by Mr. Howard 

 Saunders, who carefully went over the whole of the proofs, 

 while Dr. E. B. Sharpe was kind enough to do the same ; nor 

 must he fail to record his indebtedness to Professor Newton, 

 Mr. Sclater, Dr. Gadow, Mr. Ogilvie Grant, and many others, 

 not to mention the innumerable authors without whose previous 

 labours to write a book of this description would be a well- 

 nigh impossible task. Dr. Stejneger's Volume on Birds in the 

 Standard Natural History should be mentioned in particular. 



A. H. Evans. 

 Cambridge, November 17, 1898. 



