Two of the eggs of this Warbler thus identified by Mr. Jackson, and kindly loaned to me by him, are of a somewhat rounded-oval shape, less obtuse at one end. They have a clear, crystal-white ground, and are spotted with minute dottings of a bright red-brown. These are much more numerous in one than in the other, and in both are confluent at the larger end, where they are beautifully intermingled with cloudings of lilac-brown. These eggs measure, the one .78 by .60 of an inch; the other, .70 by .56 of an inch. Another nest of this species, found by Mr. Joseph H. Batty of New York, on the side of a hill near Montclair, N.J., was also built on the ground, in a part of the woods where there was no underbrush, and was placed in a slight hollow, with dry oak-leaves collected around it, and partly covering it. The nest was made of dry leaves, and lined with grasses and fine roots. It contained four eggs, alike in their marking, and corresponding exactly with those obtained by Mr. Jackson. Mr. Batty nearly stepped on the bird without her leaving the nest. Dr. Coues found the Worm-eating Warbler a rather uncommon summer resident near Washington, breeding there but sparingly. It arrives there during the first week in May, and remains until the third week in September. He describes it as slow and sedate in its movements. Helmitherus swainsoni, AUD. SWAINSON’S SWAMP WARBLER. _Sylvia swainsoni_, AUD. Orn. Biog. II, 1834, 563, pl. cxcviii. _Sylvicola sw._ RICH. _Vermivora sw._ BON. _Helinaia sw._ AUD. Birds Am. II, 1841, pl. civ (type of genus). _Helmitherus sw._ BON.; CAB.; BAIRD, Birds N. Am. 1858, 252; Rev. 180. SP. CHAR. Bill as long as the head. Upper parts dull olive-green, tinged with reddish-brown on the wings, and still more on the crown and nape; a superciliary stripe and the under parts of the body are white, tinged with yellow, but palest on the tail-coverts; the sides pale olive-brown. There is an obscure indication of a median yellowish stripe on the forehead. The lores are dusky. No spots nor bands on wings or tail. Length, 5.60; wing, 2.85; tail, 2.20. HAB. Coast of South Carolina and Georgia; Cuba (very rare). A young bird (No. 32,241 Liberty Co., Georgia) is very similar to the adult described, but differs in the following respects: the lower parts have a decided soiled, sulphur-yellow tinge, while the brown of the upper parts is much more reddish, there being no difference in tint between the crown and back; also the superciliary stripe is more sharply defined.