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Show 1869.] MESSRS. SCLATER AND SALVIN ON MEXICAN BIRDS. 361 The following papers were read :- 1. On a Collection of Birds made by Air. H. S. le Strange near the city of Mexico. By P. L. SCLATER, M.A., Ph.D., F.R.S., and O S B E R T SALVIN, F.L.S. Mr. H, S. le Strange, during his residence in Mexico, as attache to the British Legation in 1865 and 1866, formed a considerable series of bird-skins, principally in the vicinity of the capital itself and in the upper parts of the valleys which fall towards the Atlantic. Mr. le Strange having kindly submitted this collection to our examination, we have had great pleasure in determining the species contained in it (which are 262 in number), and beg leave to offer to the Society some notes on a few of the rarer species, made during our examination of the specimens. 1. PIPILO MACULATUS, Sw. Phil. Mag. 1827, i. p. 434. Three skins of this bird are in the collection. Mr. le Strange notes that it is found in the tierra fria, in the barrancas, and that its Mexican name is " Chalmero." It seems to us very doubtful whether it will not be necessary to unite under this name Pipilo arcticus, Sw., P. oregonus, Bell, and P. megalonyx, Baird. The northern specimens are mostly blacker on the back; but a skin sent to Sclater by Prof. Baird as P. megalonyx from South California, and another as P. arcticus, are not, in our opinion, separable from Mexican specimens. This bird descends as far south as the highlands of Guatemala, and was obtained by Salvin near Quezalteuango ('Ibis,' 1866, p. 193). 2. PIPILO MACRONYX, SW. Phil. Mag. 1827, i. p. 434. We have usually called the species in our collections Pipilo virescens, under which name it was described by Hartlaub, ' Journ. f. Orn.' 1863, p. 169. But upon referring to Swainson's characters there can be no doubt that the same bird is his Pipilo macronyx. It is easily known from the preceding (P. maculatus) by the olive-green edgings of the back- and wing- and tail-feathers ; but Mr. le Strange has not distinguished the two species in his M S . Sclater has one of the original specimens of P. virescens in his collection, received from Dr. Hartlaub, also examples collected by Boucard during his last expedition, and a skin obtained by Mr. White near the city of MeAxico. 3. PIPILO FUSCUS. Pipilo fusca, Sw. Phil. Mag. 1827, i. p. 434, et Anim. in Men. p. 347 ; Bp. Consp. p. 487 ; Cab. J. f. Orn. 1862, p. 474. Pipilo mesoleucus, Baird, Pr. Ac. Phil. vii. p. 119, et B. N. A. p. 518; Sclater, P. Z. S. 1856, p. 304. There is no doubt that, as pointed out by Cabanis, the present |