DESDROCraXA. 119 



fulvous :inil dusk}-; lower parts dull wliitish, irreijjulnrly spottcJ with 

 black, llab. West Indies (Jamaieii and St. Croix). 



D. arborea Linn. Tree-duck.' 

 «'. Plumaijo chiefly uniform, in distinctly defined areas of dilferent colors. 



b\ Bell}- plain light tawny-cinnamon, or fulvous, the flanks striped witii 

 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.C5- 

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

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

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



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

 ■ b*. Belly uniform black. 



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

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

 black. 

 d}. 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 dullew; the reddish brown 

 replaced by ding}^ grayish, tinged with rusty, the belly, flanks, 

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

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

 defined areas of sulphurj- 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 

 buff}-. Hah. 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. 

 JTab. Northern South America. 



D. discolor ScL. & Salv. Colombian Tree-duck.' 

 c". 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 (Link.). Brazilian Tree-duck.' 



• Anat arhoren Li:«!i., S. N. ed. 12, i. 1766, 207. Dnirlron/!pia arboret EvT., .Mon. Anat. 1S.3S, HO. 

 ' Drndrori/gna ditcolor SrL. A Salt., Nom. Neotr. 187.'?, 161. 



• Anai viduata Lius., S. N. cJ. 12, i. 1760, 205. Daidrocygna viduata Eyt., Mon. An.it. 1338, 110. 



