NOVITATES ZOOLOGICAE XXX. 1923. 247 ON A THIRD COLLECTION OF BIRDS MADE BY MR. GEORGE FORREST IN NORTH-WEST YUNNAN By lord ROTHSCHILD, F.R.S. THIS collection is a remarkably fine one ; and, in fact, when it is considered that the main object of the expedition was the collection of seeds, plants, and botanical specimens, it is a wonderful achievement. The majority of the skins are very good, and the series are very fine. The series of game birds is magnificent, and the discovery of Palaeornis derhyanus somewhat extends the known range of this species. 1. Bambusicola fytchii fytchii Anders. 1 <?, hills east of Tengyueh, April 1922, 8,000 ft. (The specimen at Tring out of the first collection is not quite adult.) 2. Tetraophasis szechenyii Mad. Tetraophasis szechenyii Madarasz, Zeitschr.f. ges. Orn. ii. p. 50. pi. ii (1885) (" East Thibet "). Forrest sent a very fine series of 3 adult (JcJ, 6 adult $?, 6 adult sex ?, and 2 young just fledged. These, together with the 2 (J (J and 1 $ adult sent before, make a series unrivalled in the world. The young birds resemble strongly the young of various Tetraonidae. Yotmg. — Downy feathers of head black-tipped and spotted with rufous. Feathers of hindneck, back, and wing-coverts dark yellowish wood-grey on concealed half, black-barred with rufous and with rusty buff or bufSsh-white shaft stripes which expand into a bioad tip on some larger wing-coverts. Rump and upper tail-coverts grey, barred with blackish. Outer three pairs of tail feathers black-barred and edged with white and rufous ; rest of rectrices basal portion black, more or less marbled with grey, outer portion white. Chin and throat white ; breast sooty grey, with buffy flammulation m one specimen and rufous in the second ; abdomen buff in one, rufous m the other, with black spots ; lower abdomen with grey transverse lines. Quills black-brown, with rusty-brown vermiculation at tips. 3 (J (J, 6 ??, 6 ? ad., 2 ? fledglings, N.W. flank of Lichiang Range, 14,000-16,000 ft,, February-November 1922 (2 young July). 3. Ithaginis geoffroyi clarkei Rothsch. Ithaginis clarkei Rothschild, Bull. B.O.C. xl. p. 67 (1920) (Lichiang Range, Yunnan). The marvellous series sent by Forrest, consisting of 29 J (J and 9 $?, throws complete light on the status of this form, and incidentally shows that both my former conclusions are wrong. In my article on the first collection I put forward the statement that the red-headed bird was the fully adult cj, while the birds with black throat and face were younger (J (J. In the article on the
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