88. PHRTGIXTT8. 783 



2. Phrygilus aldunatii. 



Chlorospiza aldunatei, Gay, Faun. Chilen. i. p. 356 (1847). 

 PhiT^ilus gavi (nee Ei/d. Sf Gerv.) ; Burm. La-Plata Rets. ii. p. 487 



(1861) ; Scl. § Salv. 'ibis, 1868, p.186, 1869, p. 285 ; Salrin, P. Z. S. 



1883, p. 421 ; Ridgio. Proc. U.S." Nat. Mus. x. p. 431 (1887). 

 Pliryo-ilus aldunatii, Scl. Ibis, 1869, p. 285 ; Gray, Hand-l. B. ii. 



p. 89, no. 7311 (1870) ; Scl. $ Salv. Nomencl. Av. Neotr. p. 31 



(1873). 



Adult male. General colour above olive-yellow, from the nape to 

 the rump ; upper tail-coverts pale pearly grey ; outer scapulars 

 pearly grey, washed with olive-yellow ; wing-coverts pearly grey, 

 with a little yellow on the lesser series ; bastard-wing, primary- 

 coverts, and quills blackish, externally pearly grey, broader on the 

 inner secondaries ; tail-feathers blackish, rather more broadly edged 

 with pearly grey ; crown of head, sides of face, ear-coverts, cheeks, 

 and throat pearly grey, darker on the ear-coverts and blackish on the 

 lores ; sides of neck and under surface of the body from the fore 

 neck downwards olive-yellow ; abdomen white ; sides of body olive- 

 yellow, the lower flanks and thighs pale ashy grey ; vent and under 

 tail-coverts white ; under wing-coverts and axillaries dull white 

 with ashy bases ; quills below dusky brown, white along the inner 

 edge. Total length 6*3 inches, culmen 0*6, wing 3*75, tail 2*7, 

 tarsus 0*8. 



Adult female. Differs from the male in having all the colours 

 duller and browner, the grey of the head and throat being dusky 

 ash-brown, with a faint whitish eyebrow ; fore part of cheeks also 

 whitish as well as the feathers below the eye ; a dusky blackish streak 

 along the malar line ; ear-coverts dull brown ; throat ashy whitish, 

 mottled with dusky ; fore neck and chest pale orange overshaded 

 with pale tawny brown ; the sides of the body and flanks deep 

 isabelline, the abdomen a little paler. Total length 5 - 4 inches, 

 culmen 0-55, wing 3-45, tail 2-05, tarsus 0*85. 



Young female. Different from the adult, and more uniform dull 

 olive-yellow above, with dusky streaks, the upper tail-coverts grey ; 

 head grey, streaked with dusky blackish on the crown ; wing exter- 

 nally duller ashy than in the male, with paler margins to the coverts ; 

 sides of face dull ashy, with a whitish supraloral streak and a 

 slight whitish line above the ear-coverts ; cheeks also ashy whitish 

 anteriorly ; throat pale ashy, washed with hoary whitish, and sepa- 

 rated from the cheeks by a malar line of blackish ; breast yellow ; 

 the abdomen isabelline with a brownish tinge on the lower flanks 

 and thighs ; under tail-coverts dull white. Total length 5"8 inches, 

 culmen 0'55, wing 3-4, tail 2*35, tarsus 0-85. 



P. aldunatii differs from P. gayi principally in its uniform upper 

 surface, the rump being coloured exactly like the back. There is 

 no certainty as to the correct determination of the sexes as described 

 above, as none of the specimens are authentically sexed. The grey 

 of the head and throat in the male is decidedly darker grey than 

 in P. gayi, and is of the same tint as the head ; the whole of the 

 abdomen entirely white. 



