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U. S. p. R. R. EXP. AND SURVEYS — ZOOLOGY — GENERAL REPORT. 



even and slightly emarginate. The outer primaries are faintly margined with white. The 

 female is said to have less hlack on the head and throat. 



This species is exceedingly rare^ and very seldom seen in collections. 



List of specimens. 



HELMINTHOPHAGA EUFICAPILLA, Baird. 



Nashville Warbler. 



Sylvia rujicapilla, Wilsok, Am. Orn. Ill, 1811, 120 ; pi. xxvii, f. 3.— Ann. Orn. B\og. I, 1832, 450 ; pi. 89. 

 Sylvia rubricapilla, Wilson, Am. Orn. VI, 1812, 15. (General Index.)— Bon. Obs. 1826, No. 159 

 Sylvia (Dacnis) rubricapilla, Nuttall, Man. I, 1832, 412. 

 Sylvicola rubrioapilla, Rich. List, 1837. 



Vermivora rubricapilla, Bonap. List, 1838. — Reinhardt, Vid. Med. for 1853, 1854, 82. (Greenland.) 

 Helinaia rubricapilla, Ann. Syn. 1839, 70.— Is. Birds Am. II, 1841, 103 ; pi. 113. 

 Helmitheros rubricapilla, Eonap. Consp. 1850, 315. 

 Helminthophaga rubricapilla, Cabanis, Mus. Hein. 1850, 20. 

 Sylvia leucogastra, Shaw, Gen. Zool. X, ii, 1817, 622. 

 " Sylvia nashvillei, Vikillot." (Gray.) 

 Sylvia mexicana, Holboll. 



Sp. Ch. — Head and neck above and on sides ash gray, the crown with a patch of concealed dark brownish orange hidden by 

 ashy tips to the feathers. Upper parts olive green, brightest on the rump. Under parts generally, with the edge of the wing 

 deep yellow ; the anal region paler ; the sides tinged with olive. A broad yellowish white ring round the eye ; the lores 

 yellowish ; no superciliary stripe. The inner edges of the tail feathers margined v.ith dull white. Female similar, but duller ; 

 the under parts paler ; but little trace of the red of the crown. Length, 4.65 ; wing, 2.42 ; tail, 2.05. 



Hnb. — Eastern North America to the Missouri ; Greenland. (Remhardt.) 



The bill is very acute ; the wings long and pointed ; the tail emarginate, not rounded. 



In autumn the entire upper parts are olive green, tinged with yellowish on the rump, some- 

 times with brownish on the head ; the patch on the crown more or less concealed. The female 

 has the white on the middle of the belly more extended. 



This species is distinguished from celata by the ash of the head, and the much purer and 

 more vivid gamboge (not greenish) yellow of the under parts. Although a smaller bird the 

 wings are proportionately longer. The continuous yellowish ring round the eye and the 

 absence of the superciliary stripe distinguish the species from both celata and peregrina. The 

 latter, besides being larger, never has any approach to the bright yellow under parts, and more- 

 over, has no concealed patch on the crown. 



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