260 



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



Comparative measurements of species. 



SEIURUS AUROCAPILLUS, S w a i n s o n . 



Oven bird ; Golden-crowned Thrash. 



Motacilla aurocapilla, Linnaeus, Syst. Nat. I, 1766, 334. — Gmelin, I, 1788, 982. 



Turdus atirecapilhts, Latham, Ind. Orn. 1, 1790, 328 — Wilson, Am. Orn. II, 1810, 88 ; pi. xiv, f. 2. — Licht. Verzeieli. 



1823, No. 424.— AuD. Orn. Biog. II, 1834, 253 : V, 1839, 447 ; pi. cxiiii. 

 Sylvia aurocapillus, Bonap. Obs. Wils. J. A. N. S. IV, 1826, 35. 

 Seiurus aurocapillus, SwAmsoti, Zool. Jour. Ill, 1827, 171.— Ib. F. Bor. Am. II, 1831, 247.— Bon. List, 1838.— 



Ib. Conspectus, 18J0, 306.— Ann. Syn. 1839, 93.— Ib. Birds Amer. 

 Turdus (Seiurus) aurocapillus, Nuttall, Man. I, 1832, 355. 

 Jiccentor aurocapillus. Rich. List, 1837. 

 Enicocichla aurocapilla, Gray, List Genera, 1840, 

 Henicocichla aurocapilla, Cabanis, Mus. Hein. 1851, 15. 

 Turdus coronatus, Vieillot, Ois. Am. Sept. II, 1807, 8 ; pi. Ixiv. 



Sp. Ch. — Above uniform olive green, with a tinge of yellow . Crown willi two narrow streaks of black from the bill, enclosing 

 a median and much broader one of brownish orange. Beneath white; the breast, sides of the body, and a maxillary line 

 streaked with black. The female and young of the year are not appreciably different. Length, 6.00 ; wing, 3.00 ; tail, 2.40, 



Hab. — Eastern North America to the Missouri. 



The sides of the head are olivaceous, paler than the hack, with a superciliary hand of the same 

 color outside the hlack. The loral space and a ring round the eye are whitish, the latter with 

 a little yellow. The feet and maxilla are yellow ; the mandible brownish. The brownish orange 

 of the crown is usually obscured by olivaceous tips to the feathers, sometimes to such an extent 

 as to hide it almost entirely from view, (4719.) 



A specimen of this species (8387) from Independance is larger with longer wings than any 

 others in the collection. 



