320 



SYSTEMATIC SYNOPSIS.— PASSERES— OSCIXES. 



envelops the head. The form of hryanti here given is the INIexicau race, lately ascertained to 

 occur at La Paz, Lower California ; it is D. rieilloti hryanti of the 2d and later eds. of the 



Key ; as above in A. O. U. Lists, 

 both eds., No. Gb^^^. The 9 is said 

 to be indistinguishable from that 

 of others of the Golden Warbler 

 group. The extra-limital forms all 

 differ from N. Am. (estiva in having 

 longer tarsi and less yellow on the 

 tail-feathers. (Not in the Check 

 List, 1882. See Am. Nat., vii, Oct. 



1873, p. 606 ; Hist. N. A. Birds, i, 



1874, p. 217 ; Pr. U. S. Nat. Mus., 

 iv, 1882, p. 414, and viii, 1885, p. 

 350. 



D. vir'ens. (Lat. virens, growing 

 green. Figs. 174, 175.) Black- 

 throated Green Warbler. 

 Adult $ , in spring : Back and 

 crown clear yellow-olive ; forehead, 

 superciliary line, and whole sides 

 of head rich yellow (in very high 

 plumage, middle of back with dusky 

 marks, and dusky or dark olive 

 lines through eyes and auriculars, 

 and even bordering crown); chin, 

 throat, and breast jet black, pro- 

 longed behind as streaks on sides ; 

 other under parts white, usually yel- 

 low-tinged ; wings and tail dusky, 

 former with two white bars and 

 much whitish edging, latter with 

 outer feathers nearly all white ; bill 

 and feet blackish. ^ in fall, and 



9 in spring: Similar, but the black restricted, interrupted, or veiled with yellow; young sim- 

 ilar to 9 1 l*ut the black still more restricted or wanting altogether, except a few streaks along 

 sides (f Sylvia montana WiLS.). Small: Length 4.80- 

 5.10 ; extent 7.60-8.00 ; wing 2.30-2.55 ; tail 2.00. East- 

 ern U. S. and British Provinces, N. to Hudson's Bay and 

 casually even to Greenland, W. only to the edge of the 

 Plains; migratory, abundant ; breeds from higher portions 

 of the Middle States, in mountains even S. to the Carolinas, 

 and plentifully from New England northward ; winters ex- 

 tralimital in the W. I. and S. to Panama ; has occurred 

 accidentally in Europe. This jaunty bird is one of the 

 commonest warblers of summer in New England, breeding 

 mostly in the pineries, in June. Nest in fork of a bough, 

 usually at some elevation, but very variable in this respect, 

 of the most miscellaneous materials; eggs 4-5, 0.67 X 0.54 to 0.58 X 0.48, white, with 

 the usual sprinkling or wreathing of brown and purplish markings. The nuptial song is very 

 peculiar. 



Black-throated Green Warbler. (From the Osprey.) 



ack - throated Green 

 (L. A. Fuertes.) 



