CHARACTERS OF DENDRGECA STRIATA 289 



a mere coincidence that the same specific name, st'riata, was bestowed upon the two birds, 

 supposed to belong to different genera, but which are the same species. Vieillot very 

 carionsly retains both under the genus Sylvia, in the Xouv. Diet 1S17, and the Ency. M6th. 

 1823, having in each of these works a Sylvia striata in two places, though one he calls ;n 

 French " Fauvette 8tri6e", and the other " Fanvette tailor". Even in Gray, G. of B. 

 1848, the name striata is similarly duplicated under Mniotilta. 



Hab. — North America, exceptinjj the Western aod most of the Middle 

 Province. North to the Arctic Ocean and Greenland. Northwest to AlaskOi, 

 in the Yukon region. West to Nebraska and Colorado. South to New Gran- 

 ada and perhaps to Chili (c/. D. atricapilla, I. 8. c). Cuba and Bahamas only 

 of the West Indies. No Mexican quotations. Breeds from Northern New 

 England northward. Winters beyond the United States. Migrates late in 

 the spring, bringing up the rear-guard of the Warbler hosts. 



Ch. sp. — S Olivacea, nigro striata, pileo nigra ; infra alba, late- 

 raliter nigro striata a rostro ad caudam; alisfuseis, albo bifas- 

 ciatis, Cauda fused, reetricibus lateralibus albo notatis ; pedibus 

 pallidis. S supra virescensy undique nigro striata ; infra virenti- 

 albida, fusco striata. 



$ , adult : Back, rump, and upper tail-coverts grayish-olive, heavily streaked 

 with black ; whole crown pure glossy black. Below pure white ; a double 

 series of black streaks starts from the extreme chin, and diverges to pass 

 one on each side to the tail, the streaks being confluent anteriorly, discrete 

 posteriorly. Side of head above the chain of streaks pure white, including 

 lower eyelid. Wings dusky, the primaries with much greenish edging, the 

 inner secondaries with whitish edging, the greater and median coverts tipped 

 with white, forming two cross-bars. Tail like the wings, with rather small 

 white spots at the ends of the inner webs of two or three outer feathers. 

 Upper mandible brownish-black ; lower mandible with the feet flesh-colored 

 or yellowish. Length, 5i-5f; extent, 9-9^; wing, 2f-2| ; tail, 2|^. 



$: Entire upper parts, including the crown, greenish-olive, with dusky 

 streaks ; below white, much tinged with greenish-yellow, especially anteri- 

 orly, the streaks dusky and not so sharp as those of the male, but still very 

 evident. Bars and edgings of the wings greenish-white. Tail as in the 

 male. Rather smaller than the male on an average. 



Young : Similar to the adult 2 , but brighter and more greenish -olivo above, 

 the streakings few and chiefly confined to the middle of the back ; below 

 more or less completely tinged with greenish-yellow, the streaking obsolete, or 

 entirely wanting. Under tail-coverts usually pure white. These autumnal 

 birds bear an extraordinary resemblance to those of D. castanea (though the 

 adults are so very different), the upper parts being, in fact, the same iu both. 

 But young castanea generally shows traces of the chestnut, or at least a buffy 

 shade, quite different from the clear greenish-olive of striata, this tint being 

 strongest on the flanks and under tail-coverts, just where striata is the most 

 purely white. Moreover, castanea shows no streaks below, traces at least of 

 which are usually observable in striata. 



The still earlier plumage of the bird when just from the nest is different 

 again, for this species, like many other SylvicolidcB, Turdidce, &c., has at first 

 a transient streaky or speckled plumage. In this condition, the upper parts 

 are grayish, the lower white, the whole body marked with blackish in the 

 form of a terminal spot or bar on each feather. 

 19 B c 



