172 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



Lanivireo solitarla . . . xax. plumhea Ridgway, Bull. Essex Inst., v, Nov., 1873, 

 181 (Colorado). 



Lanivireo soUtarius var. plumbeus Baird, Brewer, and Ridgway, Hist. N. Ara. 

 Birds, i, 1874, 377; iii, 1874, 507 (El Paso Co., Colorado). 



Lanivireo soUtaria plumbea Ridgway, Bull. Essex Inst., vii, Jan., 1875, 33 (Par- 

 leys Park, Wasatch Mts., Utah; breeding). 



Lanivireo solitarius pZwnifeeH.s Ridgway, Proc. U. S. Nat. Mus., iii, Aug." 24, 1880, 

 174, 216; Nom. N. Am. Birds, 1881, no. 141/;. 



Vireo solitarius plumbeus Ridgway, Bull. Essex Inst., vii, Jan., 1875, 20 (e. Hum- 

 boldt Mts., Nevada).— CouES, Check List, 2d ed., 1882, no. 179.— American 

 Ornithologists' Union, Check List, 1886, no. 6296. — Scott, Auk, v, 1888, 

 32 (Santa Catalina Mts. , s. Arizona; breeding above 10,000 ft. ) . — Allen, Auk, 

 V, 1888, 32 (crit.).— Mearns, Auk, vii, 1890, 260 (Mogollon Mts., Arizona; 

 habits song, etc.) .— (?) Miller, Auk, xi, 1894, 79 (Madison Co., New York, 

 1 spec, Sept. 24, 1893).— Mitchell, Auk, xv, 1898, 310 (San Miguel Co., New 

 Mexico; breedingupto 9,000 ft.).— Chapman, Bull. Am. Mus. N. H., x, 1898, 

 40 (Las Vegas, Vera Cruz, 8,000 ft., l)reeding).— Cary, Auk, xviii, 1901, 237 

 (Black Hills, Wyoming). — Oberholser, Auk, xix, 1902, 301 (Mountains west 

 of Pecos R., w. Texas). — Grinnell, Pacific Coast Avifauna, no. 3, 1902, 62 

 (Tejon Mts., California, Aug.). 



\_Vireo solitarius.'] Subsp. /i. Mreo plumheus Gadow, Cat Birds Brit. Mus., viii, 

 1883, 299. 



F[ir(?o] s^olitariusl plumbeus CovEii, Key N. Am. Birds, 2d ed., 1884, 334. — Bailey 

 (Florence M.), Handb. Birds W. U. S., 1902, 397. 



V\ireo'] solitarius plumbeus Ridgway, Man. N. Am. Birds, 1887, 474. 



LANIVIREO SOLITARIUS CASSINII (Xantus). 

 CASSIN'S VIREO. 



Similar to L. s. soUtarius, but slightly smaller and much duller in 

 color. 



Adult male. — Pileuni, hindneck, sides of neck, auricular region, 

 suborbital region, and malar region brownish gray (mouse gra}", or 

 between this and slate-gra^i; back and scapulars grayish olive-green, 

 usually more or less mixed or washed with gray, passing into more 

 decided and uniform oliye-green on rump and upper tail-coy erts; wings 

 and tail blackish slate with light oliye-green edgings, these more yel- 

 lowish on rectrices, of which the outermost has the outer web white; 

 middle and greater wing-coyerts tipped with pale olive-yellow or yel- 

 lowish white, producing two distinct bands (much narrower and less 

 continuous than in Z. s. soUtarius)', tertials broadl}^ edged with pale 

 oliye-yellowish or dull yellowish white; broad supraloral stripe and 

 orbital ring white, the latter interrupted at anterior angle of eye b}^ a 

 duskv loral streak; under jjarts white, passing on sides and flanks into 

 pale sulphur or primrose yellow and pale oliye, in broad, ill-defined 

 stripes; under tail-coverts pale primrose yellow or yellowish white; 

 inner webs of remiges and rectrices broadlj^ edged with white, this in 

 fresh plumage extending round tips of the latter; maxilla gra3'ish 

 black; mandible grayish (pale bluish gray in life) with blackish tip; 

 iris brown; legs and feet duskj^ (grayish blue in life); length (skins), 



