296 xoirrii amkijican ini:DS. 



Synopsis of Species. 



Tliroat yellow .^pnes /. 



Throat sa^h . ........... tSeries 11. 



A* Black mask oxtondin? boncath the eye and on the aurioulars. 



1. G. trichas. iJiack mask honlereil along its posterior e(l<,'e with pale ashy 



or whitish; maxillie hlack. Sexes dissimilar. 9- <)live-brown above; 



throat oidy, distinctly yt'llow; no black in;isk. Jnr. Without either black 



or pure yellow; above olive-brown, like 9? beneath pale ochruceous-buir. 



Abdomen almost always whitish ; occiput russet-olive. Bill. iVoni 



nostril, .30; tarsus, .70: winir, 2.2o ; tail, *J.ir>. llah. Whole of Fnited 



States ; in winter most of West Indies, and Middle Amt-rica, north to 



Guatemala ........ . . var. trichas. 



Colors similar; abdomen yellow. Bill, .4') ; tarsus, .00; winjr. 2.')0; 

 tail, 2..'>0. Ilab. Nassau; New Providence ; Bahamas . var. ro strata} 



Abdomen briiiht yellow ; occiput whitish-ash tinired with yellow. Bill, 

 .32; tarsus, .75; wing", 2.45; tail, 2.50. Ilab. Kastern Mi'xico (Ja- 

 la] )a?) ........... var. m elanops.^ 



2. Or. sequinoctialis. Black mask not bordered posteriorly by ashy or 

 whitish ; nnich narrower on Ibrehead than on auriculars ; maxillie yellow. 

 Sexes similar. 



Black of the auriculars bordered posteriorly by the olive-green of the 

 neck. Bill, .17 deep: wing, 2.50 ; tail, 2.35. Ilab. Northeast South 

 America (Cayenne, Trinidad, etc.) .... var. a;tjuinortialis.' 

 Black of che auriculars bordered posteriorly by the ash of the crown. 

 Bill, .14 f'iCep ; wing, 2.40 ; tail, 2.50. Ilab. Brazil . . var. velata.* 



B* Black mask lot extending underneath the eye, but confined to lores and 

 frontlet. 



3. G. poliocephala. Bill nnuh a^ in Granafellns. Al)Ove olive-green ; the 

 crown light ash ; l)eneath yellow. Sex(>s dissimilar. 



Eyelids white; nape and auriculars (»livc-gi-een ; abdomen whitish. 

 Bill, .30, .15 deep; wing. .2.20 ; tail. 2.50. Hub. We.>^t Mexico (Ma- 

 zatlan) var. poli oc e phala .'^ 



Eyelids black: nape and auriculars ashy; abdomen wholly yellow. 

 Bill, .3.5, .18 deep ; wing, 2.40 ; tail, 2.50. Hah. Guatemala (Hetalu- 

 leu) var. caninucha.^ 



Series IT. 



4. G. Philadelphia. Head all round a^hy ; lores only, black. Sexes nearly 

 similar. 



1 GcothJjipis rostratm, niiY.\NT, Pr. Post. Soc. N. H. March, 1867, 67, Inagua. 



2 Geothhjpifi nohmops, P.viiU), Review Am. Birds, I, April, 1865, p. 222. 



3 Genffilf/pis aquinoctialis iC\\i.\s\ii), P.VIU1), Rev. I, p. 224. (Mofacilla auj. G.mkijx, S. N. 

 I, 178S, 972.) 



* Geofhhipis velata (Cabants), Baihd, Rev. 1, 223. {Sylvia vel. Vieill. Ois. Am. Sept. II, 

 1807, 22, J)!. Ixxiv.) 



s G'lifft/ffpis poliocrpJiabf, liAiiin, Review Am. Birds, I, April, 1865, p. 225. 



* Geofiifypis poli'iriphnhi, var. cninniicht, Riduwav. 



The G. spcciosn, ScL. (}'. Z. 1858, 447: and Bafiu), Rev. 1864, p. 223^, from Mexico, and 

 G. semiflavns, ScL. (P. Z. S. 1860, 273, 2;a. — Baiiu), Rev. f, 1864, 223), from pAuador, are 

 si>ecies allied to G. trichas, and possibly referable to it. The original descriptions afford no 

 tangible distinctive characters. It is barely possible, however, that they are distinct. 



