to a short distance, joined its mate, and both together walked slowly from the spot with such a wonderful affectation of indifference, that we were completely taken in, and should not have carried our investigations any further had not a slight unevenness of the ground caught our eye. On removing the sand, two beautiful eggs were brought to light, having a reddish yellow shell, dotted and marked in a variety of ways. [Illustration: THE COLLARED PRATINCOLE (_Glareola pratincola_).] * * * * * The PRATINCOLES, or SWALLOW-WINGED WADERS (_Tracheliæ_), are recognisable at once by the swallow-like formation of their long wings, in which the first quill exceeds the rest in length; by their long, straight, or forked tail composed of fourteen feathers, and their slender bare legs. The toes, four in number, are very slender, the three in front are connected by a skin, and furnished with narrow, sharp, and almost straight claws. The plumage, which varies but little either in the sexes or at different seasons of the year, is very similar in all the species. The Pratincoles, or Sea Partridges as they are called on the Continent, inhabit the temperate and warm portions of the eastern hemisphere, and frequent the borders of lakes and rivers in the vicinity of mountains. Like the Swallow, they seek their insect prey whilst upon the wing, or from the surface of the ground, over which they run with great rapidity. The eggs, three or four in number, are deposited in a slight nest placed among rushes or thick marshy herbage. [Illustration: THE COMMON THICK-KNEE, OR STONE CURLEW (_Œdicnemus crepitans_).] THE COLLARED PRATINCOLE.