SYLVICOLID.E — THE WARBLERS. 303 



Mr. John Burrouglis, of Wasliington, was so fortunate as to obtain the 

 nest and eggs of this Warbler near the head-waters of the Delaware Eiver, 

 in Roxbury, Delaware County, N. Y. " The nest," he writes me, " was 

 in the edge of an old bark-peeling, in a hemlock wood, and was placed in 

 some ferns about one foot from the ground. The nest was quite massive, its 

 outer portions being composed of small dry stalks and leaves. The cavity 

 was very deep, and was lined with fine black roots. I have frequently 

 observed this Warbler in that section. About the head of the Neversink 

 and Esopus, in the northwest part of Ulster County, New York, they are the 

 prevailing Warbler, and their song may be heard all day long. Their song 

 suggests that of the Kentucky Ground Warbler, but is not so loud and fine." 

 Mr. Burroughs states elsewhere that " the eggs, three in number, were of 

 light flesh-color, uniibrmly speckled with fine brown specks. The cavity of 

 the nest was so deep that the back of the sitting bird sank below the edge." 



Their eggs are of an oblong-oval shape, pointed at one end. They measure 

 .75 by .55 of an inch. Their ground-color is a pinkish-white, and they are 

 marked with dots and blotches, of varying size, of dark purplish-brown. 



Geothlypis macgillivrayi, Baird. 



MACGILLIVRAY'S GROUND WARBLER. 



Sylvia macgillivrayi, AuD. Orn. Biog. V, 1839, 75, pi. cccxcix. Triclias macg. AuD. 

 Geothlypis ma eg. Baird, Birds N. Am. 1858, 244, pi. Ixxix, fig. 4; Rev. 227.— Sclatei;, 

 Catal. 1861, 27 (Jalapa and Guat.). — Ib. P. Z. S. 1859, 363, 373 (Xalapa, Oaxaca). — 

 Cab. Jour. 1861, 84 (Costa Rica). —Cooper & Suckley, P. R. R. Rep. XII, ir, 1859, 

 177. — Cooper, Orn. Cal. I, 1870, 96. Sylvicola maeg. Max. Cab. Jour. VI, 1858, 

 118. Sylvia tolmixi, Towns. J. A. N. Sc. 1839. Triefias tolmimi, IS'utt. Man. I, 

 Trichas vegeta (Light.), Bp. Consp. 1850, 310 ; fide Cab. Jour. 1861, 84 (Mexico). 



Sp. Char. Adult male. Head and neck all round, throat and forepart of tho breast, 

 dark ash-color ; a narrow frontlet, loral region, and space round the eye (scarcely complete 

 behind), black. The eyelids above and below the eye (not in a continuous ring) white. 

 The feathers of the chin, throat, and fore breast really black, with ashy-gray tips more or 

 less concealing the lilack. Rest of upper parts dark olive-green (sides under the wings 

 paler); of lower, bright yellow. Female with the throat paler and without any black. 

 Length of male, 5 inches; wing, 2.45; tail, 2.45. yoww^f not seen. 



Hab. Western and Middle Provinces of United States, to northern boundary ; east to 

 Fort Laramie ; south to Costa Rica. 



The white eyelids of this species distinguish its males from those of G. 

 I>]iiladelphic(, in which tliere is a black jugular patch not seen in the present 

 species. The females can only be known by the slenderer bill and more 

 roiuided wing, the first quill Ijeing intermediate between the fifth and sixth, 

 instead of being considerably longer than the fifth. 



The autumnal adult male is as described above, except that there is a faint 

 tinge of green on the crown, and the ashy borders to feathers of throat and 



