SYNONYMY OF VIREO PLUMBEUS 515 



I HAVE never recognized this supposed species as different 

 from solitarius, and have nothing to contribute to its 

 meagre history. Birds doubtfully supposed by Mr. Henshaw 

 to belong here fell under his observation in Arizona, appar- 

 ently only during the migration. "In 1873, it was observed 

 both by Dr. C. G. Newberry and myself; the earliest date being 

 September 12. It was not uncommon along the Gila River, 

 where it usually kept in the tall cottonwoods. In 1874, it was 

 again met with by Dr. Kothrock and myself at Mount Graham, 

 and under precisely the same circumstances as the preceding 

 species [V. solitarius]. They were, however, here quite rare as 

 compared with solitarius; but, near Camp Crittenden, the last 

 few days of August, quite a number were seen among the 

 deciduous trees. Their seeming preference for the deciduous 

 trees over the coniferous timber is the only point wherein their 

 habits seem to differ from those of the Solitary Vireo." Mr. 

 Bidgway has a note to the effect that this bird, which he char- 

 acterizes as " rare and little known ", was observed by him only 

 in the canons of the West Humboldt Mountains, where it was 

 not uncommon in September, having probably migrated thither 

 from some region lying northwestward. 



The Plumbeous Greenlet 



Vireo plumbcus 



Vireo most like solitarius, Coues, Ibis, 1865, 164 (Fort Whipple, Ariz.). 



Vireo plumbeus, Coues, Pr. Phila. Acad. 1866, 74 (Arizona). Coop. Am. Nat. iii. 1869, 479. 



Allen, Am. Nat. vi. 187-2, 345. Coues, Key, 1872, 351. Merr. Ann. Rep. TJ. S. Geol. Surv. 



Terr, for 1872, 1873, 714. 

 Vireosylvia plumbea, Bd. Rev. AB. 1866, 349, fig. Aiken, Pr. Bosk Soc. xv. 1872, 198 



(Colorado). 

 LaniTireo plumbens, Ridgw. 



Rep. Expl. 40th Par. iv. 



pt. iii. 1877, 451 (Rocky 



Mountains). 

 Vireo solitarius var. plum- 



beus, AUen, Bull. MCZ. \ v \ jMLtf Jf$ 



iii. 1872, 176. Coues, 



BNW. 1874, 100. Yarr. 



< Hensh, Rep. Orn. 



Specs. 1874, 12. Hensh FlG - 60 -~~ Vireo plumbeus, natural size. 



ibid. 1874, 43, 77, 105 (Arizona, &c.). Hensh. ListB. Ariz, 1875, 151,-Hensh. Zool. Expl. 



W. 100 Merid. 1875, 224. 



LaniTireo solitaria var. plumbea, Ridgw. Bull. Ess. InsK v. 1873, 181 (Colorado). 

 LaniTireo solitarius var. plumbeus, B. B. <fi R. NAB. i. 1874, 37, 377, pi. 17, f. 10. 

 Plumbeous Vireo, Coues, 11. cc. 

 Lead-colored Vireo, B. B. <& R. 1. c. 

 Western Solitary Vlreo, Hensh. l. c. 



HAB. Southern Rocky Mountain region of the United States, and south- 

 ward into Mexico. 



