18/6.] NEOTROPICAL ANATID.E. 371 



Bibra, Denkschr. Akad. Wien, v. p. 131 ; cf. J. fur Orn. 1855, p. 

 57; Scl. P. Z.S. 1859, p. 206, 1860, p. 388, 1867, pp. 334, 339; 

 Abbott, Ibis, 1860, p. 159; Ph. & Landb. Cat. Av. Chil. p. 50; 

 Scl. & Salv. P. Z. S. 1868, p. 145, et Ibis, 1869, p. 284 (Elizabeth 

 Isle), et Nomencl. p. 139. 



Cisne de cabeza negra, Az. Apunt. no. 425. 



Albus ; capite et collo cum striga postoculari et mento nigris ; 

 loris nudis : long, tota circ. 48*0 poll, any I., alee 17'5, caudce 

 5*5, rostri a rictu 3'0, tarsi 3*5, dig. med. cum ungue 4.2 

 (Descr. exempl. ex inss. Falklandicis in Mus. S. & G.). Rostro 

 plumbeo, ungue albo; cera tumida ruberrima ; iridefere nigra, 

 pedibus pallide carneis (ave viva). 



Hab. Falkland Islands {Abbott) ; Straits of Magellan {Bougainville, 

 Cunningham) ; La Plata (Azara, Burmeister); Chili {Gag, Philippi 

 fy Landbeck). 



This Swan is abundant in the pampas of Buenos Ayres, and in 

 the lower portion of the Argentine Republic, and thence southwards 

 to Tierra del Fi:ego. It is also found in the Falkland Islands and 

 along the western coast of South America beyond Valparaiso, perhaps 

 almost up to the frontier of Bolivia. Dr. Cunningham observed 

 both this species and C. coscoroba near Sandy Point in the Straits 

 of Magellan, where they were breeding. 



In the Falkland Islands the Black-necked Swan is found through- 

 out the year, but is rather scarce and very wild. It seldom breeds 

 on the main island, but retires to the adjacent islets for that pur- 

 pose. Dr. Burmeister mentions its occurrence on the Parana, and 

 also states that it is found on the island of Santa Catharina off the 

 coast of Brazil, this being probably nearly its most northern 

 limit. 



The Black-necked Swan has long been introduced into Europe ; 

 and seldom a year passes but one or more broods are reared in the 

 Gardens of this Society. 



2. Cygnus coscoroba. 



Anas coscoroba, Mol. Stor. Nat. Chili, p. 207 ; Gm. S. N. i. p. 503 

 (1788) ex Molina. 



Anser coscoroba, Vieill. Enc. Meth. p. 112 (1823). 



Cygnus coscoroba, Hartl. Ind. Az. p. 27 ; Eyd. & Gerv. Ois. de 

 Favorite, in Mag. de Zool. 1836, p. 36 ; Gray and Mitch. Gen. of 

 Birds, t. clxvi. ; Gay, Faun. Chil. p. 446 (1848) (Chili) ; Burm. J. 

 fiir Orn. 1860, p. 226, et La Plata- Reise, ii. p. 512 (Parana) ; P. 

 Z. S. 1872, p. 365 ; Scl. P. Z. S. 1867, pp. 334, 339 (Chili), 1860, 

 p. 388 (Falklands); Abbott, Ibis, 1861, p. 159 (Falklands); Schl. 

 Mus. des P.-B. Anseres, p. 83 ; Ph. & Landb. Cat. Av. Chil. p. 41 ; 

 Scl. & Salv. Ibis, 1869, p. 284 (Rio Galegos); Nomencl. p. 129. 



Cygnus anatoides, King, P. Z. S. 1830-31, p. 15 (Straits of 

 Magellan); Eyton, Mon. Anat. p. 101 (1838). 



Cyynns chionis, 111. in Mus. Berol. ; Licht. Nomencl. p. 101. 



Coscoroba chionis, Bp. C. R. xliii. p. 648 (1856). 



24* 



