BIRDS OF NORTH AND MIDDLE AMERICA. 353 



DORi, Cat. Birds Brit. Mus., xxi, 1893, 378.— Anthony, Auk, xv, 1898, 316.— 



Salvtn and Godman, Biol. Centr.-Am., Aves, iii, 1902, 137. 

 Z[enaidura] graysoni Ridgway, Man. N. Am. Birds, 1887, 213. 

 [Zenaidura] graysoni Sharpe, Hand-list, i, 1899, 76.— Forbes and Robinson, 



Bull. Liverp. Mus., ii, 1900, 137. 

 Zenxdura graysoni Ridgway, Proc. U. S. Nat. Mus., iii, 1880, 195; Nom. N. Am. 



Birds, 1881, no. 461. 



ZENAIDURA YUCATANENSIS Lawrence. 



YTJCATAIT MOURNING DOVE. 



In coloration almost precisely like Zenaida yucatanensis but under 

 tail-coverts light pinkish cinnamon instead of light russet- vinaceous, 

 and with longer tail. "■ 



Adult male. — Forehead, sides of head (including superciliary region), 

 and neck (except hindneck) , clear fawn color, paler and more bufFy on 

 chin, passing into vinaceous-fawn on foreneck, chest, and under parts 

 generally, where slightly paler and more buffy (nearly light pinkish 

 cinnamon) ; a conspicuous spot of black, glossed with metaUic blue, 

 immediately beneath but partly posterior to lower posterior end of 

 auricular region; fawn color of forehead becoming somewhat darker 

 on crown, where passing into brownish gray on occiput, nape, and 

 hindneck, the last glossed, especially on lower and lateral portions, 

 with metallic purple; back, scapulars, proximal wing-coverts and 

 secondaries, and median portion of rump, plain deep drab or dull 

 bufFy brown, passing into a decidedly more grayish hue on distal 

 wing-coverts, alulas, and primary coverts, the sides of rump, abruptly, 

 neutral gray; proximal secondaries and larger wing-coverts with large 

 semi-rounded spots of black, those on secondaries more elongated ; distal 

 secondaries dusky, very narrowly edged with paler and very broadly 

 tipped with pale gray passing into white on edges ; primaries dusky nar- 

 rowly edged with paler, these edgings more distinct and white on larger 

 quills; middle pair of rectrices deep drab, becoming grayer basally 

 crossed by an indistinct irregular band of dusky about one-third the 

 distance from tip; second pair 4^11 neutral gray, crossed by a broad, 

 irregular, band of black; third pair similar but with apical portion 

 lighter gray; fourth, fifth, and sixth pairs similar, but with the black 

 band increasing in width and the apical portion growing paler until 

 that of the sixth is far the greater part white; seventh pair like sixth, 

 but outer web entirely white except a narrow black space next to 

 shaft where the band on inner web crosses the latter; sides and 

 flanks (underneath wings), axillars, and under wing-coverts plain 



a In form and coloration this bird (of which only the type is known) is so exactly 

 intermediate between Zenaidura macroura marginella and Zenaida yucatanensis (though 

 in coloration very much nearer the latter) that I am convinced that it is merely a 

 hybrid of these two species. 



1957°— Bull. 50. pt 7—16 23 



