450 ORNlTnOLOGY. 



tlie West Humboldt Mountains, where it was not uncommon in September. 

 Those found had probably migi-ated from the I'egion to the nortlnvestward, 

 or from tlie Cascade Mountains or the country adjacent, since examples of 

 Zonotrichia coronatn, Pipilo orcgonus, and Ilelosjnza guttata were obtained at 

 the same place. 



List of specimens. 



174, ad.; west slope of West Humboldt Mountains, Nevada, September 9, 1867. 

 5J — 9 — 2||— 2i— i— /^— 2jL— 1. Upper mandible black, tomium bluish-lilac; lower 

 mandible pure pale blue, the tii) black; iris, hazel; tarsi and toes, line ashy-ultra- 

 marine. 



217, S ad; east slo])e of West Uumboldt .^lountaiiis, September 2.j, 18G7. 5i— 

 7i|-2i-2-rV-i|-i--4-ii Same remarks. 



Lanivireo solitaeius. 



Solitary Viieo. 



Muscicapa soUtaria, Wilson, Am. Orn., 11, 1810, 14.'), i)l. 17, fig. G. 



Vireo soKtarius, Vieill., Nouv. Diet. Uist. Nat., XI, 1817.— Bated, B. N. Am., 

 1858, 340 ; Catal., 1859, No. 250.— Cooper, Orn. Cal., 117 (part).— Coues, 

 Key, 1872, GO, 121; Check List, 1873, 127; B. N.W., 1874, 99.— Henshaw, 

 1875, 222. 



Vireosylvia soUtaria, Baiud, Review Am. B., ISGC, 347. 



Lanutrco soUtariiis, B. B. & R., Hist. N. Am. B., I, 1874, 373, pi. xvii, fig. 8. 



This species was met with only during its autumnal mig-ratlons, when it 

 seemed to be not unconnuon in the month of September among the canon 

 thickets of the western slope of tlie Clover Mountains. A single specimen 

 was also shot in a buflfalo-berry thicket in Bucna Vista Canon, on the east- 

 ern slope of tlie "West Humboldt Mountains, in September of the preceding 

 year. It is still a question wliether sucli individuals of this species were 

 migrants I'rom the higher jiortions of the mountains or from a more northern 

 region; but that their migration Avas not vertical is most prolialjlc. 



Jjiat of specimens. 



920, <? ad; head of Humboldt Valley (Camp 24), Se|)tember 11, 18(18. 5,^—9- 

 (?)— 2|. Bill black, basal half of lower mandible, idunibeoushliie; iris, burnt umbe'' ; 

 tarsi and toes, fine ashy-blue. 



