MEMOIRS 



OF THE 



BOSTOi. SOCIETY OF NATURAL HISTORY. 



VOLUME n. PART III. NUMBER U. 



BIEDS OF WESTERN AW NORTHWESTEEI MEXICO. 



3ASED UPON COLLECTIONS MADE Bf 



COL. X J. GISA.YSON, CAPT. J. XANTUS, AND FERD. BISCHOFF. 

 Bt GEORGE K LAWRENCE. 



BOSTON: 

 PUBLISHED BY THE SOCIETY. 



1874. 



