i Contents of I oiitme I 1. 



sota, 1S6; Occurrence of the Purple and Florida Gallinules near 

 St. John, New Brunswick, 186; The Yellow Rail (Porzana novebo- 

 racensis) in Massachusetts, 186; Exceptional Abundance of the 

 Shoveller at Portland, Me., 187 ; The Velvet Scoter at Green Bay, 

 Wise, 187 ; Larus gtaucus in Texas, 187 ; The Ivory Gull (Pago- 

 phila eburnea) at St. John, New Brunswick, 1S7; A Correction, 

 188; Migration of Birds at Night, iSS: Birds and Windows. 188. 



NUMBER IV. 



On Some of the Causes Affecting the Decreasc of Birds. 



Bj //. W. Hensha-w 1S9 



On the Ossicle of the Antibrachium as found in some of 

 the North American Hawks. By A'. J(". Shufeldt, M. £>., 

 Capt. Med. Dept. U, S. Army . . . . . . .197 



Oological Notes from Montana. By Dr. J. C. Merrill, U. S. A. 203 



On a tropical American Hawk to be added to the North 



American Fauna. By Robert Ridgway . . . . .207 



On Podiceps occidentalis and P. clarkii. By //. IF. Henshavt . .214 



On the Relationship of Helminthophaga leucobronc&ialis, Brew- 

 ster, and Helminthophaga laivrencei, Herrick : with SOME 

 Conjectures respecting certain other North American 

 Birds. By William Brewster ■ ■ . . . . . 21S 



Preliminary List of Birds ascertained to occur in the Adi- 

 rondack Region, North-eastern New York. By C. Hart 

 Merriam, M. D 225 



RECENT LITERATURE. 



Stearns and Coues's "New England Bird Life," 236; Cory's "Beautiful 

 and Curious Birds." 239; Minot's "Land and Game Birds of New 

 England," 241. 



GENERAL NOTES. 



The Golden-crested Wren breeding in the Colorado Valley, 2-14: 

 Notes on the Winter Wren {Anortkura troglodytes hyemalis), 

 244: Two more specimens of Helminthophaga leucobronch ta- 

 lis) from Sing Sing, N. Y., 245: Another specimen of Siurus 

 motacilla at Lake George. N. V., 245; Myiodioctes canadensis 

 in Kansas 246; Capture of the Worm-eating Warbler in Massa- 

 chusetts. 246: Melospiza lincolni breeding in New York again, 

 246; Xanthocephalus icterocephalus in Lower Canada. 246: 

 Colaptes auratus-\-C. mexicanus, 247; Further Notes on the Lab- 

 rador Gvrfalcon taken on Long Island, N. Y., 247; Probable 

 Occurrence of Sarcorhamphus papa in Arizona. 24S; Nyctkerodius 

 violaceus in Kansas, 248; Capture of the Snowy Heron ( Garzetta 

 candidissimd) on Long Island. 248; Lobi-pes hyperboreus at 9500 

 feet. 249; Breeding of Barrow's Golden-eye in Lower Canada, 

 249: Notes on a few Maine Birds. 249; Destruction of Birds by 

 a storm while migrating, 250; Additions to the Avi-fauna of the 

 United States, 252. 



Index 253 



