BIRDS OF NORTH AND MIDDLE AMERICA. 197 



more distinctly contrasted with the greenish olive of rump and upper 

 tail-coverts; size decidedly greater. 



Young. — Very different from that of K h. huttoni, with upper 

 parts darker (deep buffy olive), and with sides of head and under parts 

 strongly suffused with brownish buff'. 



Adult wiaZ^.— Length (skins), 110-123 (117.9); wing, 63-70 (67.3); 

 tall, 49-65 (51.9); exposed culmen, 9.5-10 (9.7); tarsus, 18.5-20 (19.3); 

 middle toe, 10-11 (1(5: 5).« 



Adult female.— Length, (skins), 110-117 (113.9); wing, 62-68 (65.4); 

 tail, 49-54.5 (51.2); exposed culmen, 9-11 (9.6); tarsus, 1^-19.5 (19.1); 

 middle toe, 10-11 (10.5).« 



More southern portions of Mexican plateau, in States of San Luis 

 Potosi (mountains near Jesus Maria), Hidalgo (El Chico; Tulalcingo; 

 Eeal del Monte), Vera Cruz (Mount Orizaba; Las Vigas; Maltrato; 

 Perote), Puebla (Mount Orizaba), Oaxaca (Cosamaloapam ; Cinco 

 Senores; La Parada; Mount Zempoaltepec; Cerro San Felipe), Mexico 

 (Tlalpam), Morelos (Tetela del Volcan), and Michoacan (Patzouaro); 

 breeding and resident throughout. Guatemala (Volcan de Fuego, 

 Hacienda Chancol, etc.), at least in winter. 



(?) Vireo huUoni(not of Oassin) Baird, Rep. Pacific R. R. Surv., ix, 1858, 339, part 

 (Monterey, Nuevo Leon); Rep. U. S. and Mex. Bound. Surv., ii, pt. ii, 

 1859, 12 (do.); Cat. N. Am. Birds, 1859, no. 249, part; Review Am. Birds, 

 1866, 357, part (Monterey; La Parada, Oaxaca). 



Vireo hvMoni Solatek, Proc. Zool. Soc. Lond., 1858, 302 (Cinco Senores, Oaxaca); 

 1862, 19 (Cosamaloapam, Oaxaca); Cat. Am. Birds, 1862, 358 (La Parada, 

 Oaxaca). — Salvin,_ Ibis, 1874, 99 (Volcan de Fuego, Guatemala). — Baied, 

 Bkewek, and Ridgway, Hist. N. Am. Birds, i, 1874, 387, part. — Salvin and 

 GoDMAN, Biol. Centr.-Am., Aves, i, 1881, 203, excl. syn. part (Mexican 

 and Guatemalan references and localities). — Gadow, Cat. Birds Brit. Mua., 

 viii, 1883, 303, excl. syn. part. 



IVireo} huitoni SoLATERand Salvin, Nom. Av. Neotr., 1873, 12, part. 



[ Vireol hultonii Coubs, Key N. Am. Birds, 1872, 123, part. 



V[ireo] huttoni Coues, Key N. Am. Birds, 2d ed., 1884, 334, part. — Eidgway, 

 Man. N. Am. Birds, 1887, 477, part. 



Vireosylvia huitoni Sumichrast, Mem. Bost. Soc. N. H., i, 1869, 548 (alpine reg. 

 Vera Cruz). 



Vireo huttoni stephensi (not of Brewster) Chapman, Bull. Am. Mus. N. H., x, 

 1898, 40 (Las Vigas, Vera Cruz, breeding at 8,000 ft.) 



VIREO HUTTONI STEPHENSI Brewster. 

 STEPHENS' VIREO. 



Similar to V. h. huttoni, but coloration much paler; wing averaging 

 longer, tarsus decidedly shorter. 



Adults \sexes alike). — Pileum, hindneck, back, and scapulars plain 

 dull olive-gray, passing into dull olive-green on rump and upper tail- 

 coverts; wings and tail dusky brownish gray with very pale olive- 



« Ten specimens. 



