480 
LAMELLIROSTRAL SWIMMERS — ANSERES. 
A. Crissum white, spotted with black. 
1. D. arborea. 1 Above, dull brown, the feathers tipped with lighter ; neck streaked with 
pale fulvous and dusky ; lower parts dull whitish, irregularly spotted with black. Huh. 
West Indies (Jamaica and St. Croix). 
2. D. autumnalis. Above, reddish brown, the rump and upper tail-coverts black ; abdomen, 
flanks, sides, and under side of wing, black. 
a. autumnalis. Lower part of neck all round, including breast, reddish brown, like the 
back. Wing, 9.20-9.70 inches ; culmen, 1.90-2.15 ; tarsus, 2.25-2.60 ; middle toe, 
2.25-2.70. Hab. Middle America, including Rio Grande valley of Texas. 
(3. discolor , 2 Lower part of neck all round, including breast, brownish gray, abruptly 
contrasted above with the chestnut-brown of the back. Hab. South America. 
D. fulva. 
B. Crissum plain white. 
3. D. fulva. Lower parts plain light cinnamon, the flanks striped with paler ; back and 
scapulars black, the feathers tipped with fulvous ; upper tail-coverts white. Wing. 
8.10-8.90 inches ; culmen, 1.65-1.95 ; tarsus, 2.10-2.40 ; middle toe, 2.30-2.80. Hab. 
Middle America, north to California, Nevada, and Louisiana ; South Brazil, Buenos 
Ayres, and Paraguay. 
1 Dendrocycna arborea. 
Black-billed Whistling Duck, Edwards, Glean, t. 193. 
Canard siffleur, dc la Jamaique, Buff. PI. Enl. 804. 
Anas arborea, Linn. S. N. I. 1766, 207 (ex Edw. 1. c. ). 
Dendrocygna arborea, Eyton, Monog. Anat. 1838, 110. - — Scl. & Salv. Nom. Neotr. 1873, 73 ; 
P. Z. S. 1876, 376 (monographic). — Coues, B. N. W. 1874, 558 (synonymy). 
I Anas Jacquini, Gmel. S. N. I. ii. 1788, 536 (ex Jacq. Beitr. p. 5, no. 3). 
Hab. Bahamas, Cuba, Santo Domingo, Jamaica, and St. Croix. 
2 Dendrocycna autumnalis discolor. 
Canard siffleur, de Cayenne, Buff. PI. Enl. 826. 
“ Dendrocygna autumnalis ,” Auct. (all quotations from South America). 
Dendrocygna, discolor, Scl. & Salv. Nom. Neotr. 1873, 161 ; P. Z. S. 1876, 375. 
