22 ROCHESTER ACADEMY OF SCIENCE. 



147. Aythya vallisneria (Wils.) Canvasback. 



Transient and winter visitant; occasional. Fairly common on 

 the smaller lakes duringthe winters of 1S96 — 97, 1897 — 98, 1898 — 99. 

 Nov. 15 — March 20. 



148. Aythya marila (Linn.) American scaup duck. 

 Transient visitant; common. Not uncommon in winter, Oct. i — 



April 25. Found on all our larger bodies of water. Called "Lake 

 Bluebill." 



149. Aythya affinis (Eyt.) Lesser scaup duck. 



Transient visitant; common. March 20 — May 20; Oct. i — Nov. 

 20. Often taken in winter and a few remain through the summer. 

 Found on lakes, ponds and streams. Called "Marsh bluebill" and 

 "Creek bluebill." 



150. Aythya collaris (Donov.) Ring-necked duck. 

 Transient visitant; uncommon. I have never taken it. "Com- 

 mon on Lake Ontario" — Short, p. 7. Buffalo "Tolerably common 

 migrant" — Berg. p. 5. Elmira, "to be met with at most all seasons " 

 —Gregg No. 186. 



151. Clangula clangula americana Faxon American golden- 



eye. 

 Winter visitant ; common. Nov. i — April 25. Found on all our 

 lakes. Called "Whistler." 



153. Charitonetta albeola (Linn. ) Buffle-head. 



Transient visitant; common. Oct. 10 — Nov. 25; April 10 — May 

 20. Frequently taken in midwinter. Found on all lakes and ponds. 

 Called "Butterball." 



154. Harelda hyemalis (Linn.) Old-squaw. 



Transient visitant; common on lakes and ponds. Oct. 15 — 

 Nov. 20; April I — 25. Common on Niagara River in winter, and 

 abundant in migration. Called "Coween. " 



155. Histrionicus histrionicus (Linn. ) Harlequin duck. 

 Accidental visitant. Buffalo, — Berg, p. 5. 



160. Somateria dresseri Sharpe American eider. 



Winter visitant ; rare. Branchport, Feb., 1873 — Aub. p. 39. 

 Buffalo, "occasional winter visitant" — Ottomar Reinecke. 



