494 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



middle toe united for more than half its length to outer toe, for about 

 half its length to middle toe. 



Coloratio?i.~Rend, necii, and chest tawny, orange-rufous, or deep 

 ochraceous (adult male), or buffj yellowish (female), with a black 

 band covering loral, suborbital and auricular regions (adult male), or 

 a dusky patch on auricular region (female); two white wing-bands, a 

 white spot at base of longer primaries, and much white on inner webs 

 of lateral rectrices. 



Nidlficatlon. — Arboreal. 



^a/i(/<2.— Highlands of Mexico and Guatemala, and high mountains 

 of southern and central Arizona. (Monotypic.) 



PEUCEDRAMUS OLIVACEUS (Giraud). 

 OLIVE WARBLER. 



Advlt male in 5?/.m?w<?r.— Head, neck, and chest plain ochraceous, 

 the sides of head with a broad band of black, involving the lores,' 

 orbits, and auricular region; lower hindneck and extreme upper back 

 yellowish olive-green, this sometimes extending over whole hindneck 

 to, and including, the occiput; back, scapulars, rump, and upper tail- 

 coverts plain mouse gray; wings and tail dull blackish; middle and 

 greater wing-coverts broadly tipped with white, forming two con- 

 spicuous bands, of which the anterior one is the broader; innermost 

 greater coverts edged with light grayish olive-green; secondaries edged 

 with more yellowish olive-green; primaries narrowly edged with whit- 

 ish, the seventh to the third white at base, forming a conspicuous spot; 

 rectrices narrowly edged with pale grayish, usually becoming more 

 olive-greenish ])asally; inner webs of two outermost rectrices largely 

 white, this occupying much the greater part on exterior rectrix, the 

 outer web of which is also largely white; median portion of breast 

 and abdomen dull white, shading on sides and flanks into light olive- 

 grayish; under tail-coverts white, with part of concealed portion dull 

 grayish; bill blackish, with part of the mandible (usually basal half or 

 more) light l)rownish; iris brown; legs and feet dusky. 



Adult male in iolntei\--S\m\\vLV to the summer male, but color of 

 head, neck, and chest duller, more clay color; sides and flanks more 

 brownish; back, etc., more olivaceous. 



Adult female in mminer. — Pileum and hindneck olive-greenish (varv- 

 ing from yellowish olive-green to dull greenish olive); supra-auricular 

 region, sides of neck, throat, and chest yellowish (varying from dull 

 lemon yellow or light gamboge to dull sulphur yellow, the chin and 

 throat sometimes nearly white); auricular region dusky, at least in 

 part; lores dull grayish; suborbital region mixed dusky grayish and 

 dull whitish; rest of plumage as in adult male, but white wing-bars 

 narrower, and white spot at base of middle primaries smaller, some- 

 times obsolete. 



