_Tetraogallus tibetanus_, the Tibetan "Snow-Cock" or "Snow-Pheasant," is dark grey above, with buff markings towards the wings and rump, and black vermiculations; the under parts are white, with a grey pectoral band and black streaks posteriorly. There is a yellowish naked patch behind the eye, the bill is orange, and the feet are red. The sexes are similarly coloured, but the male has a pair of strong blunt spurs. The range extends from East Turkestan to West China, where _T. henrici_ occurs, with a grey chest. _T. himalayensis_, found from the Himalayas to the Hindu Kush and the Altai Mountains, has the pectoral band and a patch on each side of the head and nape chestnut, the chest white with black bars, the orbits yellow, the bill dusky, and the feet orange. _T. caspius_, extending from the Taurus to Transcaspia and South Persia, has the upper breast grey with black spots, and lacks the chestnut on the head; _T. caucasicus_ of the Caucasus has the occiput and nape rufous, and the chest black and buff; _T. altaicus_ of the Altai range has the last spotted with white, but no white bases to the secondaries as in the two preceding forms. These large active birds haunt stony hill-sides above the forest-zone and near the snow-line, being gregarious, yet keeping in pairs; they are wild and wary, fly straight and swiftly, utter shrill whistles or cackling notes, and feed upon insects, buds, roots, grass, moss, and fern. From six to nine yellowish or olive eggs with reddish or purplish spots, generally one-third larger than those of the Capercaillie, are laid in a hollow in the soil, sheltered by a stone or overhanging tuft. _Tetraophasis obscurus_ of East Tibet is in both sexes {230}brownish-grey above, with blackish markings anteriorly, olive tints on the mantle, and buff on the wings; the throat and some blotches on the flanks are chestnut, the breast is grey with black spots, the abdomen grey and buff, the tail mainly black and white. The male has two stout spurs. _T. széchenyii_ of Central Tibet has the throat fawn-coloured, and the whole of the under parts blotched with chestnut. The habits are apparently somewhat similar to those of the last genus. _Lerwa nivicola_, the "Snow-Partridge," ranging from the Himalayas to Western China, has black upper parts with white cross-bars, which become rufous buff on the mantle and wings; the under surface is chestnut, with black and white markings only shewing towards the belly. A pair of spurs distinguishes the cock from the hen. This species inhabits broken grassy or heathery sides of mountains in the midst of snow, up to an altitude of at least fourteen thousand feet; it is tamer than the Snow-Pheasant, flies equally well, and nestles under jutting rocks. The coveys feed on moss, seeds, and insects, and utter a short double Grouse-like note or a harsh whistle.