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Show 169 vereely banded with ochraceous. ( I.) Tail black, tipped with whitish, and crossed by eight to ten narrow bands of clouded ashy and ochraceous, the former prevailing on the outer, and the latter on the inner webs ( II.) Prevailing color of the tail white, with a grayish- brown, mostly longitudinal, mottling, crossed near the end by a broad zone of black about 2.00- 2.50 wide, the tip again white. The whitish portion crossed by five or six irregular, narrow, zigzag bands of black, these often so irregular as to hardly appear as bands when the tail is closed. JJa/>.- South and Middle America, from Buenos Ayres and Paraguay to Mazatlan and Vera Cruz. The South American and Middle American specimens of this species are so easily distinguished that they seem to be separable as well- marked geographical races, characterized as follows:-• a. Tail white, with a basal narrow band and wide subterminal zone of black. Tibiae and lining of wing without white bars. Wing, 16.50- 18.00; tail, 11.75- 12.00; culmen, 1.30; tarsus, 4.90- 5.00; middle toe, 1.90- 2.10. Hab.- Eastern South America, south to Buenos Ayres and Paraguay a. zonura. ,?. Tail black, with a medial zone and terminal and basal narrow bands of white. Tibiae and lining of the wing with conspicuous white bars. Wing, 15.15- 16.50 ; tail, 10.50- 11.50 ; culmen, 1.10- 1.35 ; tarsus, 4.30- 4.85; middle toe, 1.60- 1.90 Hab.- Middle America, north to Vera Cruz, Tehuantepee, and Mazatlan p. 1 In the northern form, the black appears to be constantly of a more plumbeous cast, the neck, back, and jugulum decidedly glaucous; the bill is also not so deep, its length being about the same; the plumbeous bands on the remiges are also more distinct. The subterminal black zone of the tail is from 3 to 4 inches in width, the white one just anterior to it 1.50 to 1.80; the next black one about the same width ; and tbe basal or sub- basal white one a little wider than the terminal band of about half an inch in width. In the southern form, the terminal white and subterminal black are about the same widths as in the north-em style, but the white zone across the middle is 4.00 to 4.50, instead of only 1.50 to 1.80 in breadth, while the black just preceding it is narrow and either basal or merely mottled with whitish at the roots. There are no young specimens of the southern race in the National collection. List of specimens in United States National Museum. Utatagut|< origH 20931 © 304 taB 5- 900 39969 XN04 MOW 37* 70 42137 30767 5* 7* 4 S9003 67* 8 57* 50 59510 24 153 759 Sex and age. d1 - tfjuv. - ad. - j u v . - Jnr. Locality. Verraejo River, Are. Rep. ..., Colima, Western Mexico . . . . Mirador, Eastern Mexico Rio Tupila. Western Mexico. Guatemala Costa Rica ( San Jose) Realejo, Central America Yucatan ( Murida) TehuanteptMB ( Protrero) Mazatlan Western Mexico . do Paraguay Costa Rica ( Lipurio) Tehuantepec do do Date. Feb. -, 1864 Nov. - » 1664 Apr. -, Jan. 88,1864 Feb. -, Feb. 8,1865 Feb. -, 1866 ,1873 Sept.-> 1874 Feb. a, I860 Oct. -, 1869 Donor. Capt. T. J. Page, TJ. S. N. J. Xantns. Dr. C. Sartorios. J. Xantns. Yerreaux. J. Carmuil. Capt. J. M. Dow. Dr. A. Schott. Prof. F. Sumichrast. CoL A. J. Grayson. Do. Capt. Page. Prof. W. M. Gabb. Prof. F. Suuiichrast. Do. Mtr specimens examined.- In mu « . Philad. Acad., 9 ; Boston SocD, o4. ; Am. Mus., N. Y., 1; Q. N. Lawrence, 3; total, 38. No. 2- 0 |