392 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



yellow on inner secondaries ; outer webs of greater and middle coverts 

 broadly tii)ped with sulphur or primrose yellow, forming two dis- 

 tinct bands; tail deep grayish brown (hair brown) the outer webs of 

 rectrices edged with olive-green; a grayish white supraloral line 

 extending to and involving upper eyelid; an indistinct dusky spot on 

 lores at anterior angle of eye; auricular region dull olive-greenish with 

 narrow shaft-streaks of pale yellow; chin and throat pale yellow- 

 ish gray, passing into light yellowish olive-green on chest and sides, 

 the rest of under parts, including axillars and under wing-coverts, 

 clear sulphiu' yellow; inner webs of remiges edged with pale primrose 

 3"ellow; maxilla brownish black, mandible brownish white or dull 

 pale buify (in dried skins); iris grayish brown;" legs and feet light 

 brownish (in dried skins) ; length (skins), 115-117 (116); wing, 61.5- 

 63.5 (62.5); tail, 53-56 (54.5); exposed culmen, 11-12 (11.5); tarsus, 

 17.5; middle toe, 9.5-10 (9.7).^ ' 



Panama (Lion Hill Station; near Panama City; San Pablo Sta- 

 tion; Santa Fe de Veragua; Calovevora); Costa Rica (San Carlos) ? 



riatyrhi/nclius siilphiirescms (not of Spix) Lawrence, Ann. Lye N. H. N. Y., vii, 

 18G2, 334 (Lion Hill Station, Panama R. R.). 



Cyclorhynchus sulphurescens Lawrence, Ann. Lye. N. Y., vii, 1802, 473 (Lion 

 Hill).— ScLATER, Ibis, 1859, 444. 



{?)Rhynchocychi.s sulphurescens Frantzius, Jour, fiir Orn., 18G9, 307 (Costa 

 Rica). — BoucARD, Proc. Zool. Soc. Lond., 1878, 63 (San Carlos, Costa Rica). 



RhyncJiocyclus sulphurescens Lawrence, Ann. Lye. N. Y., ix, 1808, 112, 146 (cor- 

 rects error in previous identification of specimen from COiSta Rica"). — Sclater, 

 Cat. Birds Brit. Mus., xiv, 1888, 168, part (Panama City, San Pablo Station, 

 Santa Fe de Veragua, and Calovevora, Panama). — Salvin and Godman, Biol. 

 Centr.-Am., Aves, ii, 1888, 9, part (Panama localities). 



[Rhynchocyclus sidphuresccns Sclater and Salvin, Nom. Av. Neotr., 1873, 49, part. 



Rhynchocychis flaro-olivaceus Lawrence, Ann. Lye. Nat. Hist. N. Y., viii, 1867 

 (pub. in 1863), 8 (Lion Hill Station, Panama R. R.; coll. G. N. Lawrence.) — 

 Sclater and Salvin, Proc. Zool. Soc. Lond., 1864, 359 (Panama; crit.). — 

 Salvin, Proc. Zoll. Soc. Lond., 1867, 148 (Santa Fe de Veragua, Panama; 

 crit.). 



[Rhynchocyclus] flavo-olivaceiis Sharpe, Hand-list, iii, 1901, 102. 



R[hynchocyclus] sulphurescens flavo-olivaceus Allen, Bull. Am. Mus. N. IL, iv, 

 Dec, 1892, 337, in text (crit.). 



\Elainia\ Jlavo-olivacea Gray, Hand-list, i, 1809, 354, no. 5370. 



RHYNCHOCYCLUS MARGINATUS Lawrence. 

 YELLOW-MARGINED FLYCATCHER. 



Ahulfs (sexes alike). — Pileum and hincbieck plain dark mouse gray 

 or olive-slate; back, scapulars, rump, upper tail-coverts, and lesser 

 wmg-coverts plain olive-green; tail deep grayish brown (dark hair 

 brown) the outer webs of rectrices edged with olive-green; wings dull 



« Heyde, manuscript. b Two specimens. 



