BIKDS OF NORTH AISTD MIDDLE AMERICA. 



69 



of head below eyes (whole of auricular and malar regions), neck, back, 

 scapulars, and under parts, chestnut-brown, darker on throat, lighter 

 on back where indistinctly streaked with dusky; feathers of rump and 

 flanks, together with upper and under tail-coverts, broadly and abruptl}' 

 tipped with pink, the remaining portion of the feathers more or less 

 dusky, especially on the rump and upper tail-coverts; wings and tail 

 dusky; the lesser and middle coverts broadly tipped with pink, the 

 greater coverts, primarj^ coverts, and part of remiges edged with pink 

 or light scarlet; rectrices also with lighter edgings but with less of 

 pink; bill entirelj' black; legs and feet black. 



Adult male in winter. — Similar to summer male but scapulars and 

 interscapulars with distinct edgings of lighter brown, feathers of breast, 

 etc., with narrow, pale margins, the pink markings, especially on 

 wings and flanks, of a softer hue, and the bill vellowish with dusky 



tip. 



Adult female. — Similar to adult male, with the same seasonal difler- 

 ences of color, but averaging paler and duller. 



Adidt male.—ljQwgth (skins), 145.03-173.23 (150.72); wing, 101.85- 

 111.70 (106.43); tail, 01.47-71.12 (60.04); exposed culmen, 10.07-12.19 

 (11.43); depth of bill at base, 7.87-9.40 (8.04); tarsus, 18.29-20.83 

 (10.81); middle toe, 12.70-15.24 (13.97).' 



Adnltftnnale.—ljQngth. (skins), 142.24-105.10 (154.43); wing, 96.52- 

 106.68 (101.85); tail, 60.71-70.61 (63.50); exposed culmen, 10.92-12.45 

 (11.68); depth of bill at base, 7.87-9.40 (8.89); tarsus, 18.80-20.83 

 (20.07); middle toe, 12.70-16.51 (14.22).- 



1 Thirty-seven specimens. 



^ Twenty-eight specimens. 



A series of summer birds from the White Mountains and Sierra Nevada of southern 

 California, in the collection of the Biological Survey, seems to be referable to true 

 L. tephrocotis; at least I am not able, in the absence of a series of summer birds from 

 other localities, to detect any differences which are not probably due to difference of 

 season, all other specimens being winter and spring birdj^, chiefly the former. The 

 average measurements of these southern California birds and those of a still larger 

 .series from more northern and eastern localities are as follows: 



Localitv. 



Wing. 



Middle 

 toe. 



MALES. 



Eighteen northern and eastern specimens (Novem 

 ber to March ) 



Eighteen southern California specimens (June, Jul y 

 August) 



FEMALES. 



Eighteen northern and eastern specimens (Xovem 



ber to March) 



Nine southern California specimens (June, July).. 



107. 70 

 105. 41 



102. 11 

 100. 84 



6G.80 

 65.28 



64.01 

 62.99 



14.73 

 13. 46 



14.48 

 13. 72 



