PALLAS'S SAND GROUSE (_Syrrhaptes paradoxus_), the representative of a group inhabiting Asia, is distinguished by the long bristle-like point in which the first wing-quill terminates, and by the shortness of its toes; these latter--three in number--are very broad, and so connected by a fold of skin as to present, when seen from beneath, the appearance of a foot-sole without toes. The claws are broad and strong, and the connecting skin covered with horny warts. This Sand Grouse is fifteen inches long, without including the longest tail-feathers, and twenty-three inches broad, exclusive of the bristle-like wing-quills; the wing measures seven inches, and the tail four inches and a half, or seven inches inclusive of its central tail-feathers. The female is shorter and more slender than her mate. In this species, the top of the head and a line that commences at the eyes and passes over the sides of the throat are dark grey; the region of the head is separated from the greyish yellow breast by a band formed of delicate black and white lines; the upper belly is brownish black, its lower portion and the feathers of the middle tail-covers light grey; the throat, brow, a broad stripe over the eyes, and the back are clay-yellow, the latter striped with a deeper shade. The quills are dark grey, those at the exterior being bordered with black on the outer, and the rest with grey on the inner web; the shoulder-feathers are of a brownish hue, edged with yellow, and tipped with white, and those on the inner wing-covers yellowish brown, tipped with blackish brown; the plumage on the tarsi is yellowish white. The female is without the band upon her breast, and is of a paler shade upon the face and lower belly; her plumage is also rather spotted than striped.