AVES THINOCORYTHID^;. 249 



Nov.) p. 197 (Buenos Aires, winter visitor, Baradero, April) ; id. Ibis, 

 1878, p. 403 (Central Patagonia resident, breeds in Oct. and also 

 observed chicks in March) ; Doering, Expl. al Rio Negro, Zool. p. 56 

 (1882) ; Salvin, P. Z. S. 1883, p. 429 (Coquimbo) ; Tacz. Orn. Perou, 

 III. p. 283 (1886) ; Scl. & Huds. Argent. Orn. II. p. 176 (1889) ; Burm. 

 An. Mus. Nac. Buenos Aires, III. part X. p. 246 (1888), part XI. p. 

 319 (1890: Northern and Central Patagonia); Oust. Miss. Scient. 

 Cap Horn, Oiseaux, pp. 108, 330 (1891); Scl. P. Z. S. 1891, p. 137 

 (Tarapaca); Holland, Ibis, 1891, pp. 16, 19; id. Ibis, 1892, p. 211 

 (Estancia Espartilla, March to June, fairly common) ; James, New List 

 Chil. B. p. n (1892); Sharpe, Cat. Bds. Brit. Mus. XXIV. p. 719 

 (1896); Lane, Ibis, 1897, P- 34 (Tarapaca); Schalow, Zool. Jahrb. 

 Suppl. IV. p. 662 (1898 : Cabo Espiritu Santo, E. Tierra del Fuego, 

 Feb.: El Paramo Bahia, San Bastrana, E. Tierra del Fuego, Feb.); 

 Salvad, Ann. Mus. Genov. (2) XX, p. 624 (1900: Punta Arenas, 

 May) ; Martens, Hamb. Magalh. Sammelr. Vog. p. 16 (1900) ; Nicoll. 

 Ibis., 1904, p. 43 (Punta Arenas). 



Tinochorus swainsonii, Less. 111. Zool. pi. 16 (1830) ; Des Murs in Gay's 

 Hist. Chil. Zool. I. p. 388 (1847). 



Tinochorus eschscholtzii, Geoffr. & Less. Cent. Zool. p. 140, pi. 50 (1830) ; 

 Fraser, P. Z. S. 1843, p. 116 (Chili, in flocks in winter). 



Thinocorus swainsoni, Gray, List B. Brit. Mus. Part III. p. 51 (1844: 

 Chile); Pelz. Reis. Novara, Vog. p. 113 (1865). 



Thinocorys rumicivorus, Sharpe, Hand List Bds. I. p. 146 (1899). 



GENERAL DESCRIPTION. 



Size, Adiilt Male. P. U. O. C. 7781. Total length, about 6.5 inches. 



Wing, 4.8 inches. 



Oilmen, 0.45 inch. 



Tail, 1.9 inches. 



Tarsus, 0.65 inch. 



The female is appreciably smaller than the male. 



Color, Adult Male, P. U. O. C. 7781. In general appearance very 

 similar to T. orbignianus, but readily distinguished by its much smaller 

 size and by the markings on the neck, throat and upper breast. 



Head : Forehead and back to the eyes slate color. Crown and occiput 



