All the nests of this lark that I have seen are remarkable for the thickness of their walls, and the strength, compactness, and elaborate care with which the materials are put together, particularly for nests built on the ground. They are well suited to protect their contents from the cold, damp ground on which they are placed; and their upper portions are composed of stout vegetable stems, lichens, and grasses strongly interwoven, and forming a strong rim around the upper part of the nest. Dr. Coues describes their eggs as of a dark chocolate-color, indistinctly marked with numerous small lines and streaks of black. Audubon describes them as having a ground-color of a deep reddish-chestnut, darkened by numerous dots of deeper reddish-brown and lines of various sizes, especially toward the larger end. Those in my possession, received from Labrador by Thienemann, measure from .75 to .78 of an inch in length, and from .59 to .62 in breadth, and have a light-brown or clay-colored ground, so thickly covered with spots as to be almost concealed. These spots are of a purplish chocolate-brown, with occasional darker lines about the larger end. In others the markings are bolder and larger and of brighter hues. Like the eggs of the _Anthus arboreus_ of Europe, it is probable that those of this Titlark exhibit great variations, both in ground-color and in the shades of their markings. Anthus pratensis, BECHST. EUROPEAN PIPIT. _Alauda pratensis_, LINN. Syst. Nat. 1766, 287. _Anthus pratensis_, BECHST. Deutsch. Vögel, III, 1807, 732.—KEYS. & BLAS. Wirb. Europas, 1840, 172.—ZANDER, Cab. Jour. I, extraheft, 1853, 60.—PAULSEN, ed. HÖLBOLL, Faun. Grönlands, 1846, 24.—REINHARDT, Ibis, 1861, 6.—NEWTON, Baring-Gould’s Iceland, 1863.—BAIRD, Rev. Am. B. 1864, 155. Figures: GOULD’S Birds Europe, pl. cxxxvi. HAB. Europe generally; common in Lapland; accidental in Greenland; St. Michael’s, Norton Sound. This species in general form resembles the _A. ludovicianus_, the fifth primary in both being abruptly and considerably shorter than the outer four; the bill and legs quite similar. The average size appears much the same. The upper parts are, however (especially the head and back), more distinctly streaked with dusky; the edge and inside of wing greenish-yellow, not white, and the upper plumage and outer edges of the quills decidedly olive-green. The shafts of the middle tail-feathers above are whitish, not dark brown; the under parts greenish-white, conspicuously streaked with dark brown. The bill is dusky, the base and edges paler; the legs dusky flesh-color, not dark brown. The occurrence of this species in Greenland was noticed in the Review; and since the publication of that work a specimen has been obtained at St. Michael’s, in Alaska, by Mr. W. H. Dall, and is now in the Smithsonian collection. The specimen in question appears to be the true _pratensis_.