AVES FALCONID^. 



625 



Asturina melanoleuca, Schl. Mus. Pays Bas II. Asturinae, p. 5 (1862: 



Patagonia). 

 Bitteo melauoleucus, Sharpe, Cat. B. Brit. Mus. I. p. 168 (1874: Rio 

 Negro: Eastern Patagonia); Oust. Miss. Scient. Cap Horn, Oiseaux, 

 pp. 35, 324 (1891 : Santa Cruz, Sept. : Salinas, Dec. : Delgada Point, 

 June); Gosse in Fitzger. Highest Andes, App. C. p. 343 (1899: Inca, 

 breeding) ; Martens, Hamb. Magalh. Sammelr. p. 5 (1900: Patagonia: 

 Tierra del Fuego). 



General description. 



Size. — Adult male, No. 8992, P. U. O. C ; Chubut, Patagonia, July, 

 1896. Collector, Museo de La Plata. 



Total length, about 28.00 inches. 



Wing, 21.0 inches. 



Culmen, 2.3 inches. 



Tail, 10.5 inches. 



Tarsus, 4.2 inches. 



Fig. 314. 



Butco mdanokiicus. Adult female. One-half natural size. 



Color. — Adult male cited. 



General color: Above, smoky blue-black; below, ashy on the throat, a 

 broad band of smoky blue-black on the chest and breast, rest of under 

 surface pure white, with faint line-like barring of ashy brown. 



Head : Whole top of head and crown smoky blue-black ; the lores and 

 sides of the face ashy, with fine hair-like lines of blackish, and the ear- 

 coverts ashy, shaded with smoky blue-black. The bases of all the feathers 



