AVES FALCONIDvE. 635 



Burm. An. Mus. Nac. Buenos Aires, III. part X. p. 241 

 Northern Patagonia), part XI. p. 315 (1890: Rio Chico del Chubut). 



Btttto varius, Gould, P. Z. S. 1837, p. 10 (Santa Cruz, Patagonia); Darw. 

 Voy. Beagle, Birds, p. 26 (1841: Straits of Magellan, Feb.; St. Julian, 

 Jan.); Cass. U. S. Expl. Exped. p. 92, pi. 3, fig. i (1858: Patagonia); 

 Gould, P. Z. S. 1859, p. 94 (eggs described); Scl. P. Z. S. 1860, p. 

 384 (Falkland Is.). 



Bufeo unicolor, D'Orb. et Lafr. Syn. Av. p. 7 (1837). 



Butto eryfJtronofus, Gould, Voy. Beagle, Birds, p. 26 (1841 : Chiloe and 

 Falkland Islands); Fraser, P. Z. S. 1843, P- IO 9 (Chili, in the open 

 parts of the country); DCS Murs in Gay's Hist Chil. Zool. I. p. 215 

 (1847); Hartl. Naum. 1853, p. 220 (Chili); Gould, P. Z. S. 1859, p. 

 93 (Falkland Is., eggs described); Scl. P. Z. S. 1860, p. 384; id. 

 Ibis, 1860, p. 25, pi. i, fig. 3 (egg); Abbott, Ibis, 1861, p. 151 (East 

 Falkland Is., Common, breeds in October); Phil, and Landb. Cat. 

 Av. Chil. p. 3 (1868); Scl. and Salv. Ibis, 1868, p. 188 (Sandy Point, 

 Straits of Magellan); iid. Ibis, 1869, p. 284 (Fox Bay, W. Falklands, 

 Jan.); Cunningh. Nat. Hist. Str. Magell. p. p. 187, 299 (1871); Huds. 

 P. Z. S. 1872, p. p. 536, 549 (Rio Negro); Leyb. Excurs. Pamp. 

 Arjent. p. 56 (1873); Scl. & Salv. Nomencl. Av. Neotr. p. 119 

 (1873: Patagonia); Sharpe, Cat. B. Brit Mus. I. p. 172 (1874: Falk- 

 land Is.; Straits of Magellan ; Patagonia); Gurney, Ibis, 1876, p. 68; 

 Durnf. Ibis, 1877, p. 38 (Ninfas Point, Chupat Valley, breeds in Nov.), 

 1878, p. 397, Central Patagonia, resident, breeds in Oct.); Gibson, 

 Ibis, 1879, p. 411 (Cape San Antonio, June); Durnf. Ibis, 1880, p. 

 p. 413, 427 (Tortugas, May); Scl. & Salv. Voy. Chall. II. Birds, p. 

 150 (1880: Falkland Is., eggs); Doering, Expl. al Rio Negro, Zool. 

 p. 50 (1882: northern Patagonia); Salv. P. Z. S. 1883, p. 426 

 (Coquimbo); Gurney, List Diurn. B. Prey, p. 69 (1884); Barrows, 

 Auk, I p. 109 (1884: Carline to Azul, April, plentiful); Tacz. Orn. 

 Perou, I. p. 115 (1884); Phil. Ornis, IV. p. 158 (1886: Cebollar); 

 Withington, Ibis, 1888, p. 469 (Lomas de Zamora, not common, not 

 observed to breed); Scl. & Huds. Argent Orn. II. p. 62 (1889: Pata- 

 gonia, abundant); Oust Miss. Scient Cap Horn, Oiseaux, pp. 28, 

 324 (1891: Punta Arenas, Feb.); Frenzel, J. p. O. 1891, p. 114 

 (C6rdoba); Scl. P. Z. S. 1891, p. 135 (Tarapaca); Huds. Idle Days 

 in Patag. p. 213 (1893); Aplin. Ibis, 1894, p. 194 (Uruguay); Hoi- 



