PREFACE. 



51. Parula Warbler. (Compsothlypis americana.) 



52. Cape May Warbler. (Dendroica tigrina.) 



53. Yellow Palm Warbler. (D. palmarum hypochrysea.) 



54. Maryland Yellow-throat. (Geothlypis trichas.) 



55. Wilson's Warbler. (Sylvania pusilla.) 



56. Long-billed Marsh Wren. (Cistothorus palustris.) 



57. Hudsonian Chickadee. (Parus hudsonicus.) 



58. Blue-gray Gnatcatcher. (Polioptila caerula.) 



59. Gray-cheeked Thrush. (Turdus aliciae.) 



60. Olive-backed Thrush. (T. ustulatus swainsonii.) 



61. Black Guillemot. (Cepphus grylle.) 



62. Brunnich's Murre. (Uria lomvia.) 



63. Razor-billed Auk. (Alca torda.) 



64. Yellow-headed Blackbird. (X. xanthocephalus.) 



65. King Eider. (S. spectabilis.) 



The number of species in Dr. Hall's list, 208, 

 minus those of which I have no record since his 

 compilation, 13, and minus also the ones identified 

 since as one species, 6, plus the accessions, 65, gives 

 the total of the present list, 254. 



It is not within the scope of this work to give a 

 technical description and life history of the birds 

 mentioned herein, as that information can be ob- 

 tained in standard works on North American birds 

 by scientific ornithologists, such as Alexander Wil- 

 son, and Prince Lucien Bonaparte, John James 

 Audubon, Dr. Coues, Prof. Baird, Robert Ridgew ay, 

 and others. 



The nomenclature of the list is the same as that 

 of " The American Ornithologists' Union Check- 

 list of North American Birds." Mr. L. S. Foster, of 

 35 Pine-street, New York City, is the " A. 0. U.'s" 



