114 BIRDS OF ILUNOIS. 



with the jet-black upper parts ; another (D. rirenii) has a coal-black 

 throat, sharply defined against the pure gamboge-yellow cheeks, the 

 back bright olive-green, the lower parts white. One of the most 

 striking in appearance is the Hooded, or Mitred Warbler (Si/lriinia 

 viitrata) the plumage of which is rich yellow beneath, olive- green 

 above, the head jet-black except on the sides, where it is rich 

 yellow, the same as the lower parts ; the plumage is still further 

 varied by white patches on the inner webs of the tail feathers, 

 which show distinctly when the tail is spread. Without going into 

 further detail, it may Ite remarked that a peculiar shade of olive- 

 green, which has on this account been well termed "warbler-green," 

 is the usual color of the upper parts in the birds of this family, 

 some species which are otherwise colored in the adult stage having 

 this tint more or less developed in the autumnal plumage of the 

 young. 



As natural an arrangement, consistent with convenience of analysis, 

 of the genera of this extensive family as tiie author is at present 

 able to present, is the following. The groups here recognized are 

 fairly well defined, but are hardly entitled to the rank of sub- 

 families. 



o"— Bill cylindrical (sometimes even somewhat compressed), not abrui>tly bont at tip 

 and wliliout very distinct notch; rictal bristles weak, sometimes even (appurcntly) 

 quite obsolete. 

 b>. tilzo small itotal lenetli under 6.60 Inches); bill slender and nearly cylindrical, the 

 outlines nearly straleht. 



1. Mniotilteee {yVood W'arhlerf:). Feet comparatively weak, not reachine. when 



outstrutL'hod, near to the end ot the tail. Wins rutber lenKthenod and lolnt- 

 ed. couskicrably longer than the nearly even or slightly emarelnutcd tail. 

 ChiiHy arboreal. 



2. Geothlypese (iJround Warblers). Feet stronK, reachine whi-n outstretched 



nearly or (lulte to the end o( the tall. Wine rather rounded, usually shorter 

 (never decidedly louRer) than the rounded or slightly graduated tail. Terres- 

 trial, 

 b'. Size very large (total length more than 7.00 Inches); bill stout, compressed, high, 

 the culmen much curved. 



3. loterieae ('.Via(-lVnri(cr. ). Bill without notch or rlcial brisUes; wing much 



ruuiulud, decidedly shorter than the rather lengthened tall, 

 a'— Bill decidedly depressed (quite Flycatcher-like), the Up abruptly bent and distinctly 

 notched, riclal bristles strongly developed. 

 i. Setophageee {Fiucalching Warblers). 



Analysis of Genera. 



a. Hniotilteee. 



1. Middle toe. with claw, longer than tarsus. 



Bill much compressed for terminal halt, the lateral outlines decidedly 

 concave; culnien aud eonys decidedly convex; commissure moderately 

 concave. Ilictal bristles very luconsplcuous; notch just perceptible Hniotilta. 



