rathbone's warbler. 575 



the Common Yellow-Throat, and probably breeds in this 

 quarter, though it is most commonly seen towards the close 

 of summer only. Its note, which I have heard, resembles 

 in a measure that of its prototype Triclias, but it is much 

 more varied and agreeably warbling. Its autumnal Ucitt 

 also is louder, deeper, and easily distinguishable from that 

 closely allied species. 



The length of Roscoe's Yellow-Throat is about 5 and l-8th inches ; 

 extent of the wings 6;^ inches ; the bill above five twelfths of an 

 inch; tarsus one third of an inch. Very dark olive, the margins of 

 the feathers lighter ; rump paler. Inner webs of the quills dark 

 brown. Bill dark flesh-color, brown at the tip. Feet flesh color. 

 Irids pale brown. 



RATHBONE'S WARBLER. 



{Sylvia Rathbonia, Audubon, Orn. Biog. i. p. 333. pi. 65.) 

 Sp. Charact. — Pale golden yellow; the back olive; wings and 

 tail dark yellowish-brown edged with yellow ; feet flesh-color. — 

 The sexes nearly alike in plumage. 



This elegant new species was discovered by Audubon in 

 the alluvial forests of the Mississippi, where he met with a 

 single pair, actively employed in the capture of winged 

 insects, as they sported amidst the glowing blossoms of the 

 splendid Trumpet-Flower, {Bignonia radicans.) The nest 

 and habits of the species, probably a southern one, yet re- 

 main unknown. 



The Rathbone Warbler is about 4^ inches in length ; the bill from 

 above, 4 lines long ; tarsus 7 lines ; the middle toe ^ an inch. Gen- 

 eral color bright yellow, the upper parts olivaceous. Quills and tail 

 dusky-brown, the former yellow on the outer webs, the latter mar- 

 gined externally with the same color. Bill yellowish-brown above, 

 beneath yellow. Feet flesh-color. Irids hazel. The 2d quill 

 longest 



