V,i2 BIRDS OF ILLINOIB. 



the hack witli moro or lens of an indlfitlnet patch of ollvo-irreen; throat and eyelids in'ny- 

 l»h white, abdomen, anal rcclon. und orl»»um pure white; jueulum and Hides of breast 

 palo ash-Bray. From two Hpeclmenw obtained at ML Curmcl, III., July 17. 1871. Both of 

 these show a larjte patoh of briuht camboKo-yellow on the breast, these feathers de- 

 notine the oommenci'nient of the adult plumase. One of them also has the chin and 

 an liidlsilnot supraloral lino tineed with yellow. 



"Autumnal males are browner on the chin, yellower on the throat and jueulum. 

 Head tinced with (jreenlsh; secondaries edged with ereonish yellow. Autamnal females 

 are lleht greenish olive above, dirty white beneath. 



"In very brlchtly colored spring males, there Is freauontly (as In M.XB. rhiladflpbia) 

 a well-dellned. broad blackish band across the juftulum. anterior to irnoiiually distinct 

 and rather broader one across the breast, of a brown tint, siiotted with black, while the 

 sides are much Bpottod with chestnut-brown: the blue above is very pure, and the sreen 

 patch on the back very sharply doflnod." tTIist. ,V. Am. B.) 



This pretty little warbler is abundant during the migrations, and 

 is also not uncommon in swampy forests during Rummcr, when it 

 inhabits cliiclly those woods where the long gray lichens {Uxnea) 

 are abundant on the trunks and branches of the trees. In these 

 long beard-like tufts it constructs its nest, which is so artfully con- 

 cealed that only the actions of the owners can reveal its location. 



Gencs DENDROICA Gray. 



Dendroica Obay, List of Gen. and Subg. B,2d ed. Appendix, 1842.8. Type.^WofaciVfa cor- 

 onata Linn. 



The essential characters of this genus, as here enlarged, have 

 been given on page 115. Therefore, we will in this place give the 

 differential characters of the two so-called subgenera, fuller diag- 

 noses of which will be found under their separate headings : 



Dendroica.— Bill not acute, the eonys convex, the notch distinct. Toneue uot lacerate 



or fringed at tip. 

 Perissoglossa.— Bill very ,icute, the gonys slightly concave near tip, the notch ob.solote 



or very indistinct. Tongue forked and deeply lacerate at tip. 



Subgenus Perissoglossa Raird. 



Perissoglosna Baibd. Rev. Am. BIrd.a, ISM. 181. Type, Motacilla tigrina Osr. 

 "Okn.Ciiau. Form of Dendrnicn, but bill slender, acute, with very Indistinct notch; the 

 commissure gently arched or curved from the base; the gonys also straight, or oven 



