142 PROCEEDINGS OF THE NATIONAL MUSEUM. 



all the exposed portions of the wings (juite similar in color to the back; 

 supraloral area and eye ring white; lores slate color; no well-detined 

 superciliary stripe; cheeks, sides of throat and neck slate color, all but 

 the last somewhat mixed with whitish; chin and center of throat white, 

 sharply defined laterally and against the slate gray of the breast; center 

 of the breast heavily mottled with slate gray, the sides of the same, 

 together with sides of body and the flanks, deep slate gray, the latter 

 very slightl}' mingled with olive green; median portion of abdomen 

 white: under tail-coverts pale yellowish; bend of wing and axillars 

 lemon yellow. Bill dark brownish slate; feet pale; ''iris brown." 

 Length of wing, 65.5 mm.; tail, 67 mm.; exposed culmen, 11 mm.; 

 tarsus, 25 mm.; middle toe, 14 mm. 



There seems to be little, if any, difference in size between adns and 

 true leucohlejiharus, but if anything, the former is slightly smaller. 

 The only name which could by any possibilitv apply to this new form 

 is Trichas siq)erclUosus Swainson,^ and this appears to be undoubtedly 

 a pure synonym of Basileuterus leucoblej^harus leucohlepharus. 



GEOTHLYPIS ^QUINOCTIALIS VELATA (Vieillot). 



Sylvia velata Vieillot, Ois. Amer. Sept., II, 1807, p. 22, pi. lxxiv. 

 Geothlypis velata Cabanis, Mus. Hein., I, 1850, p. 16. 



One specimen in perfect plumage, entirel}^ typical of this form. 

 "Iris light brown." Some specimens fi'om western Brazil apparently 

 indicate intergradation with auricula/'ls, while others from the north- 

 eastern part of this country approach sequinoctlalis. There are at 

 least four good sulxspecies of Geoihlyph pequinoctialis, as follows: 



Geof/ilyjjf's mqui nod kills xqulnoctlalis (Gmelin). — Northern South 

 America, from Trinidad and Guiana to Colombia, and probably north- 

 eastern Peru. 



Geofhhjj^is a^qidnoctialis velata (Vieillot). — Eastern and southern 

 Brazil to northern Argentine Republic, southeastern Peru, and pos- 

 sibly Chile. 



Geothlyjjis seqitinoctialis auricularis (Salvin). — Western Peru. 



GeotJdypis sequinoctialis chiriquensls (Salvin). — Veragua, U. S. 

 Colombia. 



Although Sylvia cKcuUata Latham^ antedates Sylvia wJata^ Vieillot 

 for this species, to which attention has been called by Dr. Richmond,^ 

 the combination Geothlypis cueidlata can not be employed for this 

 bird, since it was long previously used as the original designation of a 

 Mexican bird described by Salvin and Godman.^ 



' Anim. in Menag., 1837, p. 295. 



2 Index Orn., II, 1790, p. 528. 



3 Ois. Amer. Sept., II, 1807, p. 22, pi. lxxiv. 



*Auk, XVII, 1900, p. 179. 



5 Ibis, 1889, p. 237. 



i 



