VIREO. 477 



greenish posteriorly ; beneath decidedly tinged later- 

 ally with olive-yellow; wing-bands narrow, tinged 

 with olive-yellow ; length 4.25-4.75, wing 2.40-2.45 

 (2.43), tail 2.00-2.10 (2.06), bill from nostril .26-.29 

 (.28), tarsus .72-.76 (.75). Hab. California (resident). 

 632. V. huttoni Cass. Hutton's Vireo. 

 f\ Paler and grayer, with longer wings and tail and 

 (usually) more slender bill; above olive-gray, tinged 

 with olive-green posteriorly; beneath very faintly 

 tinged laterally with olive-yellowish ; wnng-bands 

 broader, pure white; length 4.90-5.20, wing 2.50-2.65 

 (2.58), tail 2.10-2.20 (2.16), bill from nostril .25-.30 

 (.28), tarsus .70-.75 (.72). Hab. Mexico, western 

 Texas, New Mexico, Arizona, and Lower California. 

 632a. V. huttoni Stephens! Brewst. 

 Stephens's Vireo. 

 c'. Sides (from ear-coverts to flanks, inclusive) light tawny. 



Above light brown, becoming more tawny on forehead, the sec- 

 ondaries, primaries, and tail-feathers edged with pale olive; 

 two bands across wing, and edges of tertials, white; lores, 

 orbits, and median lower parts white; wing about 2.50, tail 

 about 2.15. Sab. Island of Cozumel, Yucatan. 



V. bairdi Ridgw. Baird's Vireo.' 

 i'. Wing not much longer than tail (the difference less than length of exposed 

 culmen). 

 c\ Lower parts white Visually more or less tinged with grayish or olive 

 laterally). 

 d\ Wing less than 2.50, tail less than 2.25. 



e\ Middle wing-coverts not distinctly, if at all, tipped with white; 

 bill from nostril less than .30. 

 Above plain gray, more or less tinged with olive-green- 

 ish posteriorly (sometimes on back also) ; greater wnng- 

 coverts (sometimes middle coverts also) narrowly, and 

 not very distinctly or abruptly, tipped with white ; a 

 rather indistinct supraloral streak and orbital ring 

 grayish white, the lower portion of lores (from bill to 

 eye) grayish or dusky; lower parts white, the sides 

 and flanks tinged, more or less strongly, with olive- 

 grayish and pale yellow; length 4.80-5.25, wing 2.10- 

 ksd (2.17), tail 2^^03-2.20 (2.09), bill from nostril .25- 

 .29 (.27), tarsus .70-.80 (.72). Kest in bushes, in 

 thickets. Eggs .67 X -48. ^aft. Southern and central 



1 Vireo bairdi RiDGW., Descr. New Sp. B. Cozumel, Feb. 26, 1S85, 2 ; Proc. U. S. Nat. Mus. viii. 1885, 

 565. 



