SVLVICOLID.K — THE WAUBLEItS. 



223 



wantiiifT on the bnrk, and much ivstriutiMl on tlie under parts. Tail witli moro lirown. 

 Lcn},'lli of mail", o.^r, ■ winy:, 2.00; tail, 2.2r». (Xo. 'J40.) Yo„f,;,. Dull l,ro\viiisli-oliv.* 

 above; palo ochraecous-yullow beiieatli, with tiiu throat more whitish; the yellow of tail 

 rcstrietod to iimi'r half of inner wehs. The latter feature will serve to di.stiii},'uish it from 

 any other Xoith American spi^eics. 



IIaii. Entire iVorth Amciica, and in winter into South America as liu- as Ecuador 

 Cayenne, and Trinidad. Not, recorded from West Indies, where replaced by allied species'. 



Ill tlie great abuiKlance of this species ami its wide range of distribution, 

 tliei'c are many variations in size and color, thouoji none tiiiit are not readily 

 understood. In yoting l)irds tlie yellow of tiie tail-l'eatli<n's is more restricted, 

 sometimes contiiied to the edge of the inner wehs. la adults tjiere is occa- 

 sion.dly ti tinge of orange in the foreliead. 



Si/hia rdthbunia of Auduhon is described with even tail, and tlie tail-feath- 

 ers brown, edged extermilly witli yellow ; the reverse of cvdicu. It is gene- 

 rally, however, consideretl u synonynie. 



Birds of this type ("(Golden Warblers") of six or eight additional species 

 are known to occur in the West Indies, the Galapagos, and in Middle America; 

 one of them, D. hrjimiti, possibly to be met with in Southern Arizona. (See 

 Baird, Keview Am. Dirds, Hi;*,.) 



After comparing a series of about one hundre<l and twenty North and 

 Central American specimens (tiie latter being winter visitors to the region 

 where uV)taineil), nothing really characteristic of any particular region "can 

 be detected. Specimens from the I'acilic coast of tlie United States are per- 

 fectly identical in colors with those from the Atlantic States ; and they agree 

 in size and proiwrtions, exceiit of the bill, which is iippreciably longer and 

 Itroader in the Eiistern than in the Western birds. The mo.st highly col- 

 ored examples are from the interior regions, along the Mississippi Valley from 

 Louisiaiiii to Northern Illinois, and over the plains north to Fort Simpson. 

 The majority of the specimens from this region are just appreciably diflerent 

 from others, in having the yellow more intense and prevalent, almost sub- 

 duing the olive .shades above ; the crown more tinged with orange. Some- 

 times (as in No. 4,a01, Calcasieu Pass, La.) the runi]i and upper tail-coverts 

 are aij.3olutely ^;/^/y^ yellow, only a medial stripe on the feathers being oliva- 

 ceous like the back. Tiie orange-rufous tinge on the crown is deei)est in 

 Nos. 4,600, Fort Lookout, and 4,:!()(), Calcasieu Pass. 



Three adult summer males from Alaska (Xos. 54,420, Kodiak ; 54,42."'., 

 Yukon liiver; and 27,207, Fort Yukon), as well as one from Maine (52,378^ 

 Caliiis), differ from others in having the olive pervading the whole surface 

 above, even to the bill, the forehead being only tinged with yellow, and the 

 edges of wing-coverts merely inclining to this color. The lower parts are 

 much as in Southern s])eciineiis, thougii the yellow is less intense. 



Females from Arizona (as 4!l,712, Camp (Jrant, May ; 40,004, Fort Whip- 

 ple, May ; and 34,:M0, Los Pinos, New JMexico, June) differ from others in 

 very bleached plumage, the lower ])arts being almost white, and the upper 



