202 ZOOLOGY— BIKDS. 



iug, when folded, nearly to the end of the tail; tail emarginate; tarsus no longer than 

 the middle toe and elaw. Hallux little if any longer than its claw ; hill little shorter 

 than tarsus (averaging little over half the tarsus in Dendroica), attenuate, notably 

 depressed, yet very little widened at base; culmen rather concave than convex in 

 most of its length, the under outline almost perfectly straight from extreme base to 

 tip; nasal fossa' very large, with a highly developed nasal scale; rietal vibrissa- few 

 and short ; plumage without streaks. 



•'The form of the bill is quite peculiar, lacking entirely the pariue aspect of that 

 of Dendroica ; it somewhat resembles that of Seiurus. The relationships of P. oliracea 

 appear to be with the Jamaican Sylvicola, eoa of Gosse. In habits, it somewhat 

 resembles the Certkiido3 n .— (OOUES, MSS). 



While in the field, my attention being attracted to certain peculiarities of this 

 bird, both structural and as shown in its habits, as compared with the genus Den- 

 droica, which seemed to amount to generic distinctions, I called the attention of my 

 fiii'iid Dr. Elliott Cones to these, and, as a result of his examination of the specimens, 

 he has erected the genus as above given. 



PEUCEDRAMUS OLIVACEDS (Giraud). 



©live-heatled Warbler. 



Sylvia oliracea, Giraud, Birds Texas, 1841, 14, pi. vii, f. 2. — Sclat., Proc. Zool. 



Soc, 1855, 66. 

 Sylvicola oliracea, Cassin, 111. Birds Texas, 185.5, 283, pi. xlviii. 

 Dendroica olivacm, Sclat., Proc. Zool. Soc, 1852, 298 (Oaxaca ; cold region). — Id., 



Proc. Zool. Soc, 1850, 303 (Jalapa).— Id., Cat,, 1861, 31, No. 190.— Bd., Rev. 



Am. Birds, i, 1SC5, 205.— Bd., Brew., & Eidg., N. A. Birds, i, 1874, 258.— 



Hensiiaw, Am. Sportsman, v, Feb. 20, 1875, 328 (introduced into United 



States fauna). 

 Rliimamphux olivaceus, Sclat., Proc. Zool. Soc, 1850, 201 (Cordova). 

 Sylvia tmniata, Dubus., Bui. Acad. Brux.,xiv, 1847, 104. — Id., Rev. Zool., 1848, 245. 

 Sylvicola twniata, Bon., Consp., 1850, 300. 



Hab. — Both coasts of Mexico south into Guatemala, Arizona. 



This species was given by Mr. Giraud as a bird of Texas ; but the 



quotation has been disregarded by authors under the assumption that the 



locality of his specimens was, through mistake, erroneously given. It would 



appear, however, that its occurrence in Texas is rendered by no means 



improbable, since the capture of several specimens by our party during the 



past season in the mountains of Southern Arizona, During a three days' 



visit to Mount Graham, August 1 to 4, the species was not detected; though 



this can hardly be considered as negativing the probability of its occurrence 



here as a summer resident, since in so short a period the time was far too 



limited to examine, even cursorily, a region abounding at this season in 



