SYLVICOLIDJ'; — THE WARBLERS, 



297 



Eyelids dusky (oxropt in 9); a hlaok jiatoli on jn;j;iiliiiii of ^. 9. 

 Tluoat tinjioil witli yellow. l[(ih. Easloni Province of Noriii America; 

 in winter south to Panama \iu: ph Had i"'/) li i k . 



Eyelids white; no lilack patch on jnfrnlum. 9. Tin-oat not tiiifjcil 

 with yellow. Ifal>. Western and Middle Province of United States ; 

 in winter south to Costa Rica (Western Coast) . var. muc<i illivray i. 



26017 



Geothljrpis trichas, ('ai$a\. 



HABTLAKO TELIOW-THBOAT ; BLACK-MASKED GROUND WABBLEB. 



Tiirdua trichnx, I,ixn. >S. N. UtJti, 2113. Si/hi'i trkluis, Lath. ; Am., etc. Oenlhli/phi 

 triclws, Caii. Mus. Hein. 18.iO, 16. — Haieiii, Birds N. Am. 241; IJev. 220. — Ousn- 

 LA(Mi, Cab. .lour. 1861, 326 (Culm). — Sci.ATKit, Catal. 1861, 27, no. 167. — Makcii, 

 Pr. A. N. Sc. 1863, 293. — Loim), Pr. K. Art. Inst. Woolwich, IV, 1864, 115 (X. W. 

 Boundary). —,lo.\K.s, Nat. Bcninida, 29. — Samuels, 205. — CoopKit, Orn. Cal. I, 

 1870, 95. Si/lvia marUundkn, Wil.sox. Tricluis mar. Bon. Jiegu/11.1 mystaccus, 

 SiKi'iiKNs. Trkluis pcrsonatm, Swainson. Sylvia roseoe, Aud. Trkluis brac/iyduc- 

 lylus. Swains. 



Other localities ([uotcd : Xiilnpa, Onxnea, Cordova, ScL. OuaUmala, S('l.. & Sacv. Balm- 

 mas, Bryant, t'o.t/n Jlka, Caii. ; Lawk. Orhidn (autumn). Sum. Yitaitan, Lawk. 



Figures: Vii.:ii,i,. Ois. II, pi. xxviii, xxi.x. — Aui>. Orn. Biog. I, II, V, pi. xxiii, cii, ccxl. 

 — \Vii.s. I, pi. vi, tig. 1. — BUKKON, PI. enl. 709, fig. 2. 



8p. Char. (No. 20,024 <J.) Win;,'s a little .shorter than the somewhat graduated tail. 

 Bill .slender, the dejjtli contained about two anil a half 

 times in distance from nostrils to tip. First qnill about 

 equal to seventh. Forehead to above the anterior edj^e 

 of the eye, and across the entire clu'eks, ears, and jaws, 

 and ending in an angle on sides of neck, black, with a 

 .suflusion of hoary bluish-gray behind it on the crown and 

 ^ides of neck ; the occii)ital and inu^hal region grayish- 

 brown, pa.ssing insensibly into the olive-green of the up- 

 per parts. Chin, throat, jugulum, edge of wing and cris- 

 snm ricli yellow (the latter p.iler) ; rest of under part.s, 

 with lining of w ings, yellowish-white, the sides tinged GcoMyph trhhas. 



with browni.sh ; outer i)riniary edged with whitish, the others with olive-green. Rill black ; 

 legs y.'Uowish. Total length, 4.40 ; wing, 2 lo ; tail, 2.;30 ; graduation, .2.-) ; width of outer 

 tail-feather, .28; diU'erence lietween fii'st and third quills, .15; length of bill from forehead, 

 ..52 ; from nostril. .:iO ; along gape, .(50 ; tarsn.s, .7') ; middUi too and claw, .00; claw alone', 

 .18 ; hind toe ami claw, .48 ; elaw alone, .20. 



Male in winter, and the female, without the black mask; the forehead tinged with 

 brown, the yellow of the throat less extended, the eyelids whitish, and a yellowish super- 

 ciliary line. 



Had. The whole United States, from Atlantic to Pucino, and .south to Costa Rica; Ber- 

 mnda (Octol)cr) ; Bahanms ; Cul)a ; .Jamaica. 



The young hird is browni.sli-olive above, becoming more vireseent on the 

 rump and tail ; eyelids, and whole lower jiarts, soft light buff, with a faint 

 tinge of yellow on the brea.st and lower tail-coverts. 



Tliere is very much variation niiinifested in a large series (containing more 

 than one hundred and thirty specimens, pruiciptdly North American), though 

 38 



