HELMITHKRUS. 



170 



ffffmiiithophfign per. Cab M»ifl. Heln. — In. Jour. Om. 1801. 85 

 (Costa Rica).— Baihd, Hirds N. Am. IS.OH, 258.— Srr,ATBR & Sai,vin, 

 IbiH, 18(10, ,31 (Ouateniala).— Sclatkk, P. Z. 8. IS.IP, 373 (Oaxaon) ; 

 Catal. 18H1, 29, no. 18i».— Lawkknck, Ann. N. Y. Lye. ISCil, 322 

 (Panama). — Qpnulach, Cab. Jour. 18tfl, 326 (Cuba, very rar«). 



Si/lria tetiiirsMei, Virillot, Knoycl. Meth. II, 1823, 462. 



f Sylvia mismiriensis, Max. Cab. Jour. VI, 1858, 117. 



flah. Eastern province of N. America : North to Fort Simpson, H. B. T. ; 

 Httxioo; Oaxaca t Uuatenala ; Ck)8ta Rica ; Panama R. R. Very rare in Cuba. 



Autumnal specimens and young birds are sometimes so strongly 

 tinged with greonish-yellow as to be scarcely distinguisliable from 

 H. celala. The wing is, however, always longer, and the ob.scure 

 whitish patch on the inner edge of the exterior tail feather, near its 

 tip, is ahno.st always appreciable. In celata this edge is very nar- 

 rowly and uniformly margined with whitish. 



A young bird of the year, from Fort Simpson (27,228), hna two 

 distinct greenish-white band.s on the wings, and the forehead and 

 cheeks greenish-yellow. A corresponding age of H. celata has the 

 wing bands more reddish -brown, the wings shorter, and no white 

 patch on the outer tail feather. 



It is possible that Mr. Sclater is mistaken in quoting this species 

 from Oaxaca, the only Mexican locality mentioned by authors. 



HELMITUERUS, Raf. 



Ilelmitherus, Rap Jour, de Phys. vol. 88, 1819, 417. (Type Motacilla 



vermivora, Lath.) 

 Vermivora, Swainson, Zool. Jonr. IV, 1827, 170. 

 Htlinaiit, AoD. Syn. 1839, 66. (Type Sylvia swaiHsoni, Acd.) 



fielmitheriig veriniroriis. 



Motacilla vermivora, Qhel. Syst. Nat. I, 1788, 951. — fSiflvia vprmivora. 

 Lath. lad. Orn. II, 1790, 499.— Wils. Ill, pi. xxiv, fig. 4.— Aud. 



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