DENDROCYGNA. 119 



fulvous and dusky ; lower parts dull whitish, irregularly spotted with 

 black. Sab. "West Indies (Jamaica and St. Croix). 



D. arborea Linn. Tree-duck. 1 

 a'. Plumage chiefly uniform, in distinctly defined areas of different colors. 



b\ Belly plain light tawny-cinnamon, or fulvous, the flanks striped with 

 paler. 



Adult : Back and scapular region black, the feathers tipped with ful- 

 vous or cinnamon ; upper tail-coverts white ; head and neck plain 

 tawny, like lower parts, the top of head and hind-neck darker; 

 bill black ; length about 20.00-21.00, wing 8.10-8.90, culmen 1.65- 

 1.95, tarsus 2.10-2.40, middle toe 2.30-2.80. Sab. Tropical and 

 subtropical North America, north to California, Nevada, and Louisi- 

 ana ; also, southern Brazil, Paraguay, and Argentine Eepublic. 



178. D. fulva (Gmel.). Fulvous Tree-duck. 

 b 1 . Belly uniform black. 



c 1 . Under tail-coverts white, spotted with black ; bill light-colored (red in 

 life) ; above reddish brown, the rump and upper tail-coverts 

 black. 

 d 1 . Adult : Lower part of neck, all round, and chest, reddish brown, or 

 cinnamon, like the back. Young : Similar, but pattern of color- 

 ation much less distinct, and colors duller ; the reddish brown 

 replaced by dingy grayish, tinged with rusty, the belly, flanks, 

 etc., grayish white, tinged with dusky; bill and feet dusky. 

 Downy young : Above blackish brown, varied by large, sharply 

 defined areas of sulphury buff; lower parts pale buff-yellow, 

 the belly whitish. Length 19.75-24.00, wing 9.20-9.70, cul- 

 men 1.90-2.15, tarsus 2.25-2.60, middle toe 2.25-2.70. Eggs 

 2.12 X 1.56, white, sometimes tinged with pale olive greenish or 

 buffy. Hab. Middle America, including Eio Grande Valley in 

 Texas. 



177. D. autumnalis (Linn.). Black-bellied Tree-duck. 

 d*. Adult: Lower part of neck, all round, including chest, brownish 

 gray, abruptly contrasted with the chestnut-brown of the back. 

 Sab. Northern South America. 



D. discolor Scl. & Salv. Colombian Tree-duck. 2 

 c 2 . Under tail-coverts uniform black. 



Adult : Chest and lower part of neck, all round, rich chestnut ; 

 sides yellowish white, barred with blackish ; fore part of head 

 white ; rest of head, and upper part of neck, black, with a white 

 patch on fore-neck. Sab. Eastern South America and western 



Africa. 



D. viduata (Linn.). Brazilian Tree-duck. 3 



1 Anas arborea Linn., S. N. ed. 12, i. 1766, 207. Dendrocygna arborea Eyt., Mon. Anat. 183S, 110. 



3 Dendrocygna discolor Scl. & Salt., Nom. Neotr. 1873, 161. 



» Anas viduata Linn., S. N. ed. 12, i. 1766, 205. Dendrocygna viduata Ett., Mon. Anat. 1838, 110. 



