138 ANATID^. 



Montluz. Bvll. Soc. Acclim. 1886, p. 160; Burm. Anal. Mtis. 



Nac. JBueii. Aires, iii. p. 247 (1888) ; Sclaf. Argent. Orn. ii. p. 124 



(1889) ; Tristr. Cat Coll. B. p. 51 (1889) (Puerto Bueno) ; 



B. James, New List Cliil. B. p. 9, u. 145 (1892) ; ^clat. P. Z. S. 



1892, p. 472 (breeding). 

 Bernicla chiloensis, Phil. ^- Landb. An. Univ. Chile, xxi. p. 427 



(1862); iid. Wiegm. Arch. 1863,1. p. 149 (Chiloe); Sclat. Ibis, 



1864, pp. 121, 122 (=poliocephala, Gr.) ; Phil. S; Landb. Cat. Av. 



Chil. p. 40 (1868). 

 Anser poliocephalus, Schleg. Mus. P.-B., Anseres, p. 101 (1866) ; 



Gieb. rhes. Orn. i. p. 373 (1872). 

 Chestuut-breasted Goose, Cunningh. Ibis, 1868, p. 127. 

 Chloetrophus poliocephalus, Bann. Pr. Ac. Philad. 1870, p. 131. 

 Anser (Brenthus) poliocephalus, i2cA?2W. Orn. Centralbl. 1882, p. 36; 



id. Fog. zool. Gitrt. p. 64 (1882). 

 Branta poliocephala, Hartert, Kat. Vogelsarrijnl. p. 227, n. 3369 



(1891). 

 Bernicla (Chloephaga) poliocephala. Oust. Miss. Sc. Cap Horn, Ois. 



p, 192 (1891). 



Adult. Head and neck greyish plumbeous, paler on the upper 

 part of the head ; forehead and periophthalmic feathers whitish ; 

 long feathers of the nape tinged with rufous, especially the lower 

 ones ; breast and upper back rufous chestnut, the base of the feathers 

 white, banded with black ; these bands more or less showing 

 through ; lower back greyish ; rump and upper tail-coverts black ; 

 abdomen white ; sides white, regularly banded with black ; lower 

 flanks black ; under tail-coverts white, but the outer feathers rufous, 

 with the outer web black ; scapulars rufous grey, with narrow 

 transverse black bands ; lesser and median wing-coverts white ; 

 greater wiug-coverts glossy green, with coppery reflections on the 

 outer web, forming a distinct speculum, bordered with white 

 posteriorly ; tertials greyish brown with an olive cast ; primaries 

 and primary-coverts blackish ; under wing-coverts white ; tail 

 black : " iris orange ; beak black ; legs orange, upperside with a 

 line of black ; feet and claws black, the former with a little orange " 

 (Durnford). Total length about 24 inches, wing 13-5, tail 5, 

 culmen 1-15, tarsus 2*6. 



Female. Similar. 



Hah. Patagonia and Chiloe Island, where it breeds ; Southern 

 Chili and Southern Argentine in winter : rarely in the Palkland 

 Islands. 



a. Ad. St. No locality. John Barrow, Esq. 



LP-]- 



b. S ad. sk. Chili {Legbold). Salvin-Godman Coll. 

 V. Ad. sk. S. Chili. H. B. Jones, Esq. 



[P.]. 



d. Ad. sk. Island of Chiloe, W. Coast of Sir W. Burnett & 



Chili. Capt.Fitzroy[P.]. 



(Type of the species.) 



e. d" ad. sk. Piio Negro, April. Salvin-Godman Coll. 

 /. 2 ad. sk. Chupat, Patagonia, Sept. H. Durnford, Esq. 



[P.]. 



