PEEFACE TO THE SECOND VOLUME. 



THIS volume contains our account of all the Orders of Birds met 

 with within the Argentine Republic except the Passeres, which 

 were treated of in the First Volume. It also comprises an 

 Appendix and Index, and completes the work. The Intro- 

 duction is issued with this, but is intended to be bound up with 

 the first volume, and is paged to follow the contents of that 

 volume. 



The total number of species which we have thus assigned to 

 the Argentine Avifauna is 434. To this list, no doubt, consider- 

 able additions will have to be made when the more remote 

 provinces of the Republic have been explored. We trust that 

 this work may at least serve to excite residents in Argentina to 

 make fresh investigations, for we are quite aware how imperfect 

 is the compilation now offered to the public. 



It will be seen that in the following pages, as in the first 

 volume, we have availed ourselves liberally of the information on 

 Argentine birds contained in the writings of Dr. Burmeister, 

 Mr. Barrows, and Mr. Gibson. To all of these gentlemen we 

 wish to offer our most sincere thanks, together with apologies for 



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