338 S YS TEMA TIC S Y NOP SIS. — PA S SERES — OSCINES. 



TER, BuU. Nutt. Orn. Club, July, 1883, p. 159; Eidgw., Man., 188/, p. 523; A. 0. U. Lists, 

 1886audl895, No. 681a. 



G. t. igno'ta. (Lat. ignotus, unknown or ignored, as this form was for many years ; but the 

 name ceased to be applicable as soon as it was used.) Florida Yellow-throat. Like 

 the last ; with somewhat longer bill, tarsus, and tail, as usual in Florida birds ; yellow of under 

 parts bright and extensive ; olivaceous of upper parts browner in shade ; liauks deeply shaded ; 

 fecial mask broader. Florida and Georgia. Chapman, Auk, Jan. 1890, p. 11 ; Coues, Key, 

 4th ed., 1890, p. 898 ; A. 0. U. List, 2d ed., 1895, p. 284, No. 681 b. This is G. t roscoe of 

 Hasbrouck, Auk, Apr. 1889, p. 167; but Sylvia roscoe of Audubon, Orn. Biog., i, 1831, 

 p. 124, pi. 29, was based on an immature autumnal ^ taken in Mississippi in September, of 

 such equivocal character that it has thus far proved unidentifiable ; the name cannot therefore 

 be used for the resident Florida bird. S. Atlantic and Gulf coast, S. E. Va. to E. Texas. 

 G. bel'dingi. (To L. Belding.) Belding's Yellow-throat. Adult (J : Above nearly 

 uniform olive-green, a little browner anteriorly ; below, rich yellow, paler on the vent, tinged 

 with brown on the fiauks and sides. Black mask exactly as in G. trichas, but bordered behind 

 for its whole extent with rich yellow ; there being thus no hoary ash on the head. Wing 2.60 ; 

 tail 2.70, graduated 0.50 ; bill 0.50 or more ; tarsus 0.90. Adult 9 similar to J in the body 

 colors, but lacking the distinctive head markings, as usual in the trichas group; more brownish 

 on the head, duller yellow below, and whitish or grayish on the belly and tlanks; size less. 

 Lower California, N. to San Ignacio, about lat. 27°. Quite distinct from any other species in 

 this list; near the Mexican G. melanops. Eidgw., Pr. U. S. Nat. Mus., v, 1882, p. 344; 

 Coues, Key, 3d ed., 1887, p. 870; A. 0. U. Lists, No. 682. 



(Sxbgenus Cham.ethlypis.) 



G. polioceph'ala ralph'i. (Gr. noXios, polios, hoary; Kf(j)a\T), Tcephale, head. To Dr. Wm. 

 L. Ealph.) Hoary-headed Yellow-throat. Eio Grande Yellow-throat. Ealph's 

 Trichas. Quite different again from any of the foregoing, and representing a section of the 

 genus which has been called Chamathlypis. Bill very stout, with strongly curved culmen 

 hardly twice as long as the bill is deep at base. Adult $ : Olive-green above, becoming gray 

 on the crown, the loral and more or less of the circumocular region black, the evelids white ; 

 yellow below, including edge and more or less of lining of wings, paling to buffy whitish on 

 the belly and flanks. 9 similar, having the distinctive head-markings. Length about 5.50 ; 

 wing 2.30; tail 2.60; tarsus 0.87; bill 0.47, its depth at base 0.20 or rather more. Browns- 

 ville, Texas, in Lower Eio Grande Valley. Very close indeed to G. poliocephala proper of 

 western Mexico, and also near G. palpehralis of E. Mexico, with which it agrees closely in 

 size and proportions, but is not entirely yellow below ; said to diff'er from poliocephala proper 

 only in rather larger size, especially of the bill, grayer upper parts, and paler yellow below. 

 Not in any previous ed. of the Key; G. p. palpehralis, Allen, Auk, July, 1891, p. 316 j G. 

 p. ralphi Eidgw., Pr. U. S. Nat. Mus., 1894, p. 692 ; A. 0. U. List, 2d ed., 1895, No. 682. 1. 

 ICTE'RIA. (Gr. iKrepos, ikteros, the jaundice ; hence, yellowness; from the l)ird's golden 

 breast.) Chats. Bill stout, high at base (higher than broad at nostrils), thence compressed ; 

 unnotched, unbristled, with much curved culmen and commissure. Frontal feathers reaching 

 nostrils, which are subcircular and scaled. Wings much rounded, shorter or not longer than 

 graduated tail. Tarsus partly booted, longer than middle toe ; feet stout. Inner toe cleft to 

 the degree usually seen in this family. Of largest size for this family. Form stout. Color- 

 ation simple, chiefly olive, yellow, and white. Sexes alike. Nest in bushes. Eggs white, 

 spotted. Probably only one species. 



I. vi'rens. (Lat. rirens, being green. Figs. 195, 196.) Yellow-breasted Chat. Poly- 

 glot. Clown. Charlatan. Mountebank. Adult ^ 9 '■ Bright olive-green, below 

 golden -yelhnv, belly abruptly white: lore black, isolating the white under eyelid from a white 



