48 Trans. Acad. Sci. of St. Louis. 



Tree-duck, Dendrocygna fulva, which you had the kindness to 

 present through Dr. Bean. Besides being a very acceptable 

 specimen on account of its good preparation, it is particularly so 

 from the very exceptional locality which it represents, being, so 

 far as the Eastern United States are concerned, much the 

 most northern example on record — Currituck Sound, N. C. (a 

 single accidental specimen), Louisiana and Texas being the 

 most northern localities for the species known to me, except in 

 California where it is not uncommon as far north as Stockton. 

 It has also been taken near Carson, Nev. Yours truly, 



R. Ridgway, Curator Dep't of Birds." 



Subfamily Cygninae. Swans. 



180. Olor columbianus (Ord). Whistling Swan. 



Anas columbianus. Olor americanus. Cygnus americanus. Cygnus 

 bewickii. Cygnus ferus. Cygnus musicus. American Swan. 



Geog. Dist. — North America; breeding along the coast of the 

 Arctic Sea from Baffinland and Nottingham Island to Alaska, 

 where it has been found as far south as 58° (Becharof Lake). 

 Winters on Pacific coast from British Columbia to southern 

 California; on the Atlantic coast from New Jersey to Florida; 

 rare in the interior and Gulf States. 



In Missouri a rare transient visitant in early spring (March 26, 

 1898, St. Joseph, Wilson; March 27, 1894, Keokuk, Currier; 

 March 24, 1885, St. Louis; March 16, Hurter collection). Seldom 

 met with in fall (October 8 and 9, Keokuk, Praeger). It may 

 not be out of place to remind students, as Dr. Coues does in his 

 Birds of the North-west, page 546, ^'that the yellow spot on the 

 bill is not constant, in young birds especially, often no trace can 

 be observed. In such cases the species would be distinguish- 

 able from 0. buccinator by the smaller size, fewer tail feathers, 

 and shorter, differently shaped bill." 



181. Olor buccinator (Rich.). Trumpeter Swan. 



Cygnus buccinator. 



Geog. Dist. — Interior of North America, breeding formerly 

 from Iowa and Nebraska through the North-west Territories, 

 now from about 60° to the Arctic Ocean. Winters from British 

 Columbia to southern California and migrates through the Mis- 



