AVES THINOCORYTHID^E. 



245 



The birds are known to breed in November and December in the 

 mountains and hills about Orange Bay. (Oustalet, op. cit., p. 107.) 

 The same writer also speaks of four individuals, a male and three fe- 

 males, taken in the vicinity of Orange Bay, and kept alive for three days. 

 The iris was dark brown, beak blackish brown, and the legs and feet 

 greyish. Another specimen differed in having the feet and legs grey, 

 tinged with yellow. 



Darwin's account of A. malouinus under the name of A . falklandica is 

 of special interest. He writes, "The bird is not uncommon on the moun- 

 tains in the extreme southern parts of the Tierra del Fuego. It frequents, 

 either in pairs or small coveys, the zone of alpine plants above the region 

 of forest. It is not very wild, and lies very close on the bare ground." 

 (Darwin, Voyage of the Beagle, Birds, page 118, 1841.) 



There are, in the British Museum, five males and two females all fully 

 adult birds, collected in the Valle del Lago Blanco, Chubut, by J. Kos- 

 lowsky during the months of September and June, 18991901. This 

 (Lat. 46 S. : Long. 71 W.) appears to be the most northern record of the 

 species. 



Genus THINOCORYS (Eschscholtz). 



Type. 



Thinocorus, Eschscholtz, Zool. Atlas, p. 2 (1829) ; 



Sharpe, Cat. Bds. Brit. Mus. XXIV. p. 717 (1896) T. rumicivorus. 



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



Ocypetes, Wagler, Isis, 1829, p. 762 T. rumicivorus. 



Geographical Range. Peculiar to South America. Chili, Peru, the 

 Argentine Republic and Patagonia. 



