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Show 338 MR. ft. SWINHOE ON THE BIRDS OF CHINA. [May 2, 2. VULTUR MONACHUS, L. ; Ibis, 1867, p. 413. There are specimens of this Vulture in the Peking Museum, procured by Pere David from the mountains in the north-west of the Chelee Province. 3. ACIUILA CHRYSAETOS, Cuv.; P. Z.S. 1870, p. 443. Eagles were several times seen by myself in the Nankow Pass, on the road from Peking to Mongolia, but I was not able to determine the species. Pere David identifies the resident species of these mountains with the Golden Eagle, and mentions meeting with a large variety, with longer bill and white tarse (" Catalogue des oiseaux a Pekin," Nouv. Arch, du Museum d'Hist. Nat. de Paris, tome iii. 1867), which Mr. Gurney tells m e he has seen from Denmark and also from Algeria. Mr. Gurney adds that " the specimens were in other respects in the usual plumage of the second year. The Danish examples were certainly large and fine, the Algerian not particularly so. At present I have seen no sufficient difference to make me think that there are two species or races of Golden Eagle." 4. AQUILA BIFASCIATA, J. E. Gray. Aquila heliaca, P. Z. S. 1863, p. 259 ; Ibis, 1865, p. 347. Mr. Howard Saunders has demonstrated to this Society* that the eastern form of Imperial Eagle differs, in its first plumage at least, from the European bird, and is apparently a distinct species. M. Milne-Edwards refers to Dr. Gray's name a bird sent from Pekin by Pere David, on which the Abbe remarks, " common on our mountains and in Mongolia." This species has been shot in the immature plumage in winter at Foochow; and I have noticed it in adult plumage with white scapulars on Ape's Hill, Takow, S.W. Formosa. 5. AQUILA AMURENSIS, sp. nov. Similis A. clangae, Pall., sed major. M . Milne-Edwards identifies the Tawny Eagle from Peking with A. clanga of Pallas ; and Pe're David notes the occurrence also at the same locality of the smaller allied form, A. neevia, Briss. A specimen from the Amoor, kindly sent me by Dr. v. Schrenck, is of large size, and, in Mr. Gurney's opinion, worthy of separation as a third species of this group. I enter this in the present list under the supposition that it will be the same as No. 5 of Pere David's catalogue, which he also states to be " common in our mountains and in Mongolia." Mr. Gurney very obligingly compared the Amoor specimen with a female oi Aquila clanga from Sarepta, on the Volga, and has given m e the following measurements :- Entire Wing from Middle toe length. carpel joint. Tail. Tarsus, without claw. A. clanga $ (ad.)... 31m. 23in. 11 in. 3_ in. 24 in A. amurensis ? (ad.) 33.,, 26^,, 12£ „ 4_„ 2£ „ Mr. Gurney writes : -" In plumage, I do not find that it differs * See antea, p. 37. |