A little more light has since then been given both as to its geographical distribution and its mode of nesting. Specimens of this species have been obtained in Costa Rica, Guatemala, Oaxaca, Mexico, and Panama. A specimen of this species was also taken in Colombia, S. A., by Mr. C. W. Wyatt. Dr. Gundlach mentions it as occasionally found in Cuba. Mr. Drexler secured specimens of it at Moose Factory and at Fort George in the arctic regions. Specimens were taken by Mr. Bernard R. Ross at Fort Simpson. Mr. Robert Kennicott met with it on the northern shores of Lake Winnipeg, June 6. They were then abundant, and had already mated. He again met with them at Fort Resolution, and Mr. Clarke found them at Fort Rae, Mr. W. F. Hall in Maine, Mr. Bell on the Upper Missouri, and Professor Baird in Pennsylvania. Mr. Ridgway has obtained it both in spring and in fall in Southern Illinois, where it is abundant in some seasons. It does not appear to occur on the Pacific coast. Mr. Boardman writes that the Tennessee Warbler is, in the summer time, quite a common bird in St. Stephens and vicinity. Its notes, he adds, resemble the low, subdued whistle of the common Summer Yellow-Bird. Mr. Maynard found this Warbler very common near Lake Umbagog during the breeding-season. It was found in all the wooded localities in the regions north of the neighboring mountains. Its song, he states, resembles that of _H. ruficapilla_, the notes of the first part being more divided, while the latter part is shriller. A nest of this Warbler (Smith. Coll., 3476), obtained on the northern shore of Lake Superior by Mr. George Barnston, is but little more than a nearly flat bed of dry, matted stems of grass, and is less than an inch in thickness, with a diameter of about three inches. It is not circular in shape, and its width is not uniform. Its position must have been on some flat surface, probably the ground. The eggs resemble those of all the family in having a white ground, over which are profusely distributed numerous small dots and points of a reddish-brown, and a few of a purplish-slate. They are of an oblong-oval shape, and measure .68 by .50 of an inch. A nest from near Springfield, Mass., obtained by Professor Horsford, the parent bird having been secured, was built in a low clump of bushes, just above the ground. It is well made, woven of fine hempen fibres of vegetables, slender stems of grass, delicate mosses, and other like materials, and very thoroughly lined with hair. It measures two and three fourths inches in diameter and two in height. The cavity is two inches wide and one and three fourths deep. The eggs measure .60 by .50 of an inch, are oblong-oval in shape, their ground-color a pearly white, marked in a corona, about the larger end, with brown and purplish-brown spots. GENUS PARULA, BONAP.