110 OLIVE WARBLER 



structed very simply, being formed by parting the gray leaves of the 

 orchid and digging into its center from the side, a cavity of some two 

 inches in diameter being made with an opening of one-and-a-quarter 

 inches. The bottom and sides are lined pretty well up with short 

 cottony wood fibers, forming a fine matting for the eggs to rest upon." 

 The identity of this nest, however, does not seem to have been satis- 

 factorily established. 



Eggs. Similar to those of the Parula Warbler. 



Nesting Dates. Brownesville, Texas, July 5, nest with three 

 young (Merrill) ; Lomita, Texas, May 17, nest with one egg 

 (Sennett). 



BIOGRAPHICAL REFERENCES 



(i) G. B. SENNETT, Bull. U. S. Geol. and Geog. Surv. Terr.. IV, 1878, 

 12. (2) Ibid., V, 1897, 384. (3) J. C. MERRILL, Notes on the Ornithology of 

 Southern Texas, etc., Proc. U. S. Nat. Mus., I, 1878, 123. 



Genus PEUCEDRAMUS Coues 



The single species contained in this genus has, by most authors, 

 been placed under Dendroica, but it obviously has as much claim to 

 generic distinction as several other Warblers which are conceded 

 that rank and I follow Mr. Ridgway in recognizing Peucedramus as 

 generically separable from Dendroica. From Dendroica it differs 

 chiefly in its slenderer, more rounded bill, proportionately longer wings 

 (about i.oo inch longer than the tail) and decidedly forked tail, the 

 central tail-feathers being more than .25 inches shorter than the outer 

 ones. 



In general color and pattern of coloration Peucedramus is 

 markedly unlike Dendroica, from all the species of which the male 

 differs in requiring two years to acquire adult plumage. 



OLIVE WARBLER 



PEUCEDRAMUS OLIVACEUS (Girud) PUte VI 



Distinguishing Characters. Outer vane of outer tail-feather in part white; 

 adult J with whole head and neck orange-brown, a broad black band through 

 the eye; young < and $ with the same parts yellowish, a dusky eye-band. 

 Length (skin), 4.90; wing, 3.00; tail, 2.00; bill, .45. 



Adult J, Spring. Head, neck and breast orange-brown, a broad black 

 band through the eye; back grayish olive-green; tail black, the other pair of 

 feathers white on both webs except at the end, the next pair narrowly white 

 on the outer web and largely white on the inner web, the third usually with 

 some white on the inner web; wings black, narrowly edged with olive-green: 



