. The birds of eastern North America known to occur east of the nineteenth meridian .. . Inderparts, brownish gray, shading into whit-ish on the belly ; uppei- i^arts. grayish l)rown ; no distinct breast band. Rough=winged Swallow, Stelgidoptcriix scrripeniiis. See No. 464. 266 KEY TO THE BIRDS OF EASTERN NORTH Tree Swallow. Entire underparts, white ; upper plumage, metallic steel blue; youug l)ii(l>h;ivo tlie upper plumage hrowuifili gray, !nit the under i>luinage is pure wliite. White=bellied Swallow. Tachycineta No. 462.

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