372 



Head and neck above back, rnmij, and tail coverts, lead-color, light- 

 est toward the tail, and with the feathers of the head narrowly streaked 

 in the centre with blackish, not extending to their tips. Lores black ; 

 this color washed, as it were, under the eye to its posterior margin. 

 Wing, with the remiges and coverts, varying from brownish-black on 

 the outer primaries to black on the inner secondaries and coverts ; all 

 the remiges but the first and second, and the greater coverts, margined • 

 with lead-color, liglitest on the outer gi-eater coverts. This margin is 

 quite narrow on the third primary, and becomes gradually broader to 

 the secondaries, on which, as well as on the coverts, it runs round the 

 tips, and a short distance ^on the inner webs. The smaller coverts 

 are broadly margined all round with lead-color of a darker hue than 

 that of the greater coverts. The effect of this coloration is that the 

 closed wing appears lead-color, with its outer border, a few longitudi- 

 nal narrow stripes on the outer primaries, and their exposed tips brown- 

 ish-black, and with two or three conspicuous black spots on the exposed 

 portion of inner secondaries. Tail, blackish-brown ; all the feathers 

 with the outer webs margined with plumbeous at the base, scarcely seen 

 on the outer and gradually becoming more conspicuous on the inner 

 ones, where it extends for nearly one-half their length, and is distinctly 

 serrated on its inner edge : all the feathers are tipped with light, scarcely 

 seen on the inner ones, and extending on the outer ones for more than 

 one-fourth of their length. These tips are entirely light-plumbeous on 

 the Inner feathers, and white on the inner webs, and plumbeous on the 

 outer webs of the others. Chin, and feathered part of rami of lower 

 mandible, white ; extending on the latter to little beyond the anterior 

 edge of eye, and then disappearing gradually. Throat black, inter- 

 dlgitating with the white of the chin by three short prolongations some- 

 what like the letter W. Fore-neck, breast, abdomen, flanks, tibia?, 

 and crissum, plumbeous, lightest on the centre of abdomen, and gradu- 

 ally shaded into white on the vent. Tarsi and toes red, dusky on the 

 latter. Claws, horn-color. 



The following letters were read, which have been recently- 

 received ; viz. : — 



From the Academie Royale, Bruxelles, Oct. 18, 18G2, the Natur- 

 forschende Gesellschaft des Osterlandes, Altenburg, July 15, 1863 ; 

 the Leeds Philosophical and Literary Society, Aug. 31, 1863; the 

 Royal Scottish Society of Arts, Edinburgh, Sept. 1, 1863 ; and the 

 Geological Society of London, Nov. 4, 1863, — acknowledging the re- 

 ceipt of the Society's publications ; from the Soclete Royale des 

 Sciences de Liege, May 1, 1863; the Linnsean Society, London, July 

 15 and 28, 1863, — acknowledging the same, and asking that missing 

 numbers may be supplied ; the Naturwissenschaftlicher Verein, Ham- 



