(80.) 
VIREO. 47? 
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; wing-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 stephensi Brewsr. 
Stephens’s Virco. 
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. Hab. Island of Cozumel, Yucatan. 
V. bairdi Ripcw. Baird’s Vireo! 
b*. Wing not much longer than tail (the difference less than length of exvosed 
ce’. Lower parts white ‘usually more or less tinged with grayish or olive 
d'. Wing less than 2.50, tail less than 2.25. 
é'. 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 wing- 
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- 
2.30 (2.17), tail 2.03-2.20 (2.09), bill from nostril .25- | 
.29 (27), tarsus .70-.80 (.72). Nest in bushes, in. 
thickets. Hggs 67 X .48. Hab. Southern and central 
1 Vireo bairdi Ripeaw., Deser. New Sp. B. Cozumel, Feb. 26, 1885, 2; Proc. U. &. Nat. Mus. viii. 1885, 
565. 
