PREFACE. Vll 



publish the Second Part of the work on the 1st December next, 

 and this I hope may contain the whole of the Clamatores and 

 Oscines which I shall have occasion to include. Mr. Wol- 

 ley's collection was confined to European species : it has been 

 my intention to extend its limits to those of the western half 

 of the Palffsarctic Region, as being a district more naturally 

 defined. 



The subjects from which the plates have been drawn are, in 

 every case, solely illustrative of the collection as it now stands. 

 I must here return my best thanks to all the artists who have 

 assisted me in their production, and especially to Mr. Wolf, 

 whose liberality in placing at my disposal the paintings from 

 which three of the engravings have been taken, and whose 

 kindness in superintending the execution of the rest, are only 

 equalled by tlie faithful effects of his marvellous pencil. 



A. N. 



MaGDAI-F.NK CoLLKfxE, ('AMRRIIXiK. 



April 1864. 



