23. DENDEOCTCNA. 145 



Key to the Species. 



a. Feathers of the flanks normal, viz. not very long ; 



under wing-coverts uuifonn or nearly so. 

 a' . Smaller upper wing-coverts deep chestnut. 



a". Anterior part of the head and throat white, viduata, p. 145. 

 b''. Anterior part of head not white. 



b^. Upper tail-coverts whitish buff, uniform 

 or spotted with black. 

 b^. Breast uniform rufous-chestnut, with no 



black markings fulva, p. 149. 



c*. Breast rufous-chestnut, more or less 



with black markings arcuata, p. 153. 



e^. Upper tail-coverts chestnut javanica, p. 156. 



b'. Smaller upper wing-coverts not deep chestnut. 



c". Abdomen and sides uniform black, sharply 



defined from the breast, or whitish with 



naiTOw greyish bars ; quills basally white. 



cP. Mantle chestnut, uniform with the 



back autumnalis, p. 159, 



e^' Mantle greyish brown, sharply defined 



from the chestnut back discolor, p. 161. 



d''. Abdomen and sides not uniform black, but, 

 like tlie breast, varied with white or black 

 spots ; quills not white basally. 

 f^. Upper tail-coverts uniform black ; larger, 



wing 105 inches arborea, p. 162. 



g^. Upper tail-coverts black, with white 



spots or bars ; smaller, vring 8'5 inches. . guttata, p. 164. 



b. Feathers of the flanks very long and acuminate ; 



under wing-coverts banded ; wing with no 

 chestnut colour ; sides of the breast reddish, 

 barred with black eytoni, p. 165. 



1 . Dendrocycna viduata. 



Anas viduata, Linn. S. N. i. p. '205, n. 38 (1766) (Cartagena, 

 Jacquin) ; Jacquin, Beytr. i. p. 3, n. 2, t. 1 (1784) ; Gm. S. N. 

 i. 2, p. 536, n. 38 (1788) ; Lath. Ind. Om. ii. p. 858, n. 65 (1790) ; 

 Bonn. Enc. Meth. i. p. 132 (1790) ; Vieill. N. D. v. p. 164 (1816) ; 

 Bum. Diet. Sc. Nat. vi. p. 383 (1817) ; Wied, Beise nach Bras. 

 pp. 163, 168, 307 (1820), ii. p. 199 (1821) ; Licht. Verz. DaiM. p. 84 

 (1823) ; Steph. Gen. Zool. xii. 1, p. 102 (1824) ; Less. Tr. d'Orn. 

 p. 634 (1831) ; Wied, Beitr.iv. p. 921 (Brazil) (1832) ; d'Orb. Voy. 

 1. p. 448 (1839) ; Tschudi, Consp. Av. Per. n. 345 {Wiegm. Arch. 

 1844, i. p. 315) ; Burm. Thiere Bras. iii. p. 434 (1856). 



Canard du Maragnon, D'Auhent. PI. E/d. n. 808. 



Canard a face blanche, Buf. Hist. Nat. Ois. ix. p. 255 (1783) ; 

 B'Azara, Voy. (ed. So?in.) iv. p. 343 (1809). 



Spanish Buck, part.. Lath. Si/n. iii. 2, p. 525, n. 69 (1785). 



Anm viduata fi. Lath. Ind. dm. ii. p. 858, n. 65 ^ (1790). 



Pato cara blanca, UAzara, Apunt. iii. p. 440, n. 435 (1805) (Para- 

 guay). 



Anas leucopsis, Vietll. {nee Bechst.) N. D. v. p. 116 (1816). 



Dendrocygna \-iduata, Eyt. Mon. Anat, p. 110 (1838) ; G. R. Gr. 

 TOL. xxvu. L 



