Dr. Suckley, who found them quite abundant in the neighborhood of Fort Steilacoom, on the edge of the forest, and in swampy land, describes the song as a low, soft, sad, and lively whistle, confined to one note, and repeated at regular intervals. Mr. Nuttall, the first to describe this form, speaks of it as shy and retiring, and as in the habit of gathering insects from the ground. His ear, so quick to appreciate the characteristics of the songs of birds, which showed a close resemblance between the notes of this bird and that of Wilson’s Thrush (_T. fuscescens_), enabled him to detect very distinct and easily recognizable differences. It is much more interrupted and is not so prolonged. The warble of this bird he describes as resembling _wit-wit t´villia_, and _wit-wit, t´villia-t´villia_. His call when surprised was _wit-wit_. All the nests of this species that have fallen under my observation are large, compact, strongly constructed, and neat. They measure about 5 inches in their external diameter, with a depth externally of 3; the cavity is comparatively shallow, being rarely 2 inches in depth. The external portions are constructed almost entirely of _Hypnum_ mosses, matted together and sparingly interwoven with dry leaves and fine fibrous roots, and are lined with finer materials of the same kind. These nests most nearly resemble in their material and in their position those of Swainson’s Thrush. Mr. Hepburn found these birds very abundant about Victoria. It does not usually breed there before the last of May, though in one exceptional instance he found a nest with young birds on the 24th of that month. The eggs vary in size and shape, ranging from .77 to .94 in length, and from .65 to .69 in breadth. They also vary in their ground color and in the tints of the spots and markings. The ground color is light green or light blue, and the markings are variously yellowish-brown and lilac, or dark brown and slate. Mr. Grayson found this thrush very abundant in the month of January, in the thickest of the woods, in the islands of the Three Marias, on the Pacific coast of Mexico. They were very timid and shy, more so than any bird that he saw on those islands. It frequently uttered a low plaintive whistle, and seemed solitary in its habits. Turdus pallasi, CABANIS. RUFOUS-TAILED THRUSH; HERMIT THRUSH. _Turdus pallasii_, CABANIS, Wiegmann’s Archiv, 1847 (I), 205.—BAIRD, Birds N. Am. 1858, 212.—IB. Rev. Am. B. 1864, 14.—SCLATER, P. Z. S. 1859, 325 ??.—IB. Catal. 1861, 2, No. 7.—RIDGWAY.—MAYNARD.—SAMUELS, 148. _Turdus solitarius_, WILSON, Amer. Orn. V, 1812, 95 (not of LINNÆUS).—SCLATER, P. Z. S. 1857, 212. _Turdus minor_, BON. Obs. Wilson, 1825, No. 72. _Turdus guttatus_, CABANIS, Tschudi, Fauna Peruana, 1844, 187 (not _Muscicapa guttata_ of PALLAS). Additional figures: AUD. Birds Am. III, pl. cxlvi.—IB. Orn. Biog. I, pl. lviii.