ILLUSTRATIONS OF ORNITHOLOGY. 
PHRYGILUS UNICOLOR, Tschudi. 
Pkrygilus unicolor , Tschudi Wiegm. Arch., 1844, p. 262. Tschudi and Laban. 
Fauna peruana, Ornitli., p. 219. Emberiza unicolor , De Lafresn., Syst. av. 
D’Orbig., p. 262. 
This modestly coloured bird is a native of Peru and Bolivia, 
having been met with by both D’Orbigny and Tschudi on the 
plains of Oruro in Bolivia, and on the Cordilleira of Tacora in 
Peru ; and to this range may now be added that of the Andes, in 
the vicinity of Quito, reaching an elevation of from 13,000 to 
14,000 feet above the level of the sea. The structure of this bird 
recedes considerably from that of the true buntings, and is perhaps 
more tanagrine than otherwise. There is no palatial knob, and the 
proportions of the quills vary slightly. The tarsi and feet are rather 
proportionally lengthened, together with the hind claw. Tschudi 
considers that it holds a place intermediate between Euspiza and 
Fringilla, differing from them chiefly in the longer and more com- 
pressed bill, want of the palatial knob, shorter wings and tail. He 
arranges them following Zonotrichia, and appears to consider that 
P. gayi, atriceps and some others from those ranges, form a se- 
parate group, which in all probability they do. 
Above, the plumage is uniform blackisli-grey, darker on the 
crown, and on the quills, secondaries, and tail, nearly black. The 
quills are margined with a narrow edging of pale greyish-white, 
which appears light and silvery on the dark quills. Below, and on 
the cheeks, the colour is of a uniform paler tint, nearly greyish- 
white on the vent and under tail-covers. The bill, tarsi, and feet, 
appear to have been pale umber brown. 
Entire length, 5.8; bill to forehead, 5; to gape, 6; wing, 4.5; 
tail, 2.5 ; tarsus, 9 to i. 
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