478 NOIiTII AMERICAN BIRDS. 



California (north throuj,'h Sacramento Yalloy), Lower 

 California, and Arizona. 



633(1. V. pusillus CouEs. Least Vireo.' 

 e'. Middle wing-eoverts distinctly tipped with white, like greater 

 coverts ; bill from nostril more than .30. 



Colors as in V. pusillus, except as described above ; wing 

 2.20-2.30, tail 1.90-2.00, bill from nostril .33, exposed 

 culmen .48, tarsus .78. JIab. West coast of Nicaragua 

 and Costa Rica. 



V. pallens S.vLV. Pale Vireo.' 

 <P. Wing 2.50, or more, tail 2.40, or more. 



Colors as in V. pusillus, but lores entirely graj-ish white, 

 and band across tips of gi-eater wing-coverts less distinct 

 (sometimes obsolete), the middle coverts never tipped with 

 white; length about 5.60-5.75, wing 2.50-2.60, tail 2.40- 

 2.55, tarsus .70-.78. Nest in thorny bushes. Eggs .73 X 

 .56. Sab. Southern California, Arizona, New Mexico, 

 western Texas, and northwestern Mexico. 



634. V. vicinior Coues. Gray Virco. 

 c'. Lower parts j'ellow. 



cZ'. Above dull grayish olive, the wings with two very narrow whitiso 

 or pale yellowish bands ; lores, orbital ring, and lower parts 

 pale yellow, becoming distinctly olive-gray on sides; wing 2.15- 

 2.30, tail 2.20-2.30, tarsus .80-.90. Hab. Cuba. 



V. gundlachi Lemb. Cuban Vireo. 



(P. Above bright j'cllowish olive-green ; wings without trace of light 



bands; superciliary stripe and lower parts bright yellow, the 



sides tinged with olive ; length about 5.50, wing 2.55-2.65, tail 



2.40-2.60. Ilab. Southwestern Mexico (Oaxaca to Tres Jlarias). 



V. hypochryseus ScL. Yellow Vireo.* 



Genus HYLOPHILUS Temminck.' (Page 409, pi. CXV., fig. 4.) 



Species. 



Common Characters. — Above mostly or partly plain olive or olive-green, the 

 head more or less different in color from other poi-tioiis ; beneath jilain light olive 

 or olive-greenish, the throat (in one species whole of median lower jiarts) dull 

 whitish. 



' Unqucstionnbly a good species, which .shnuM Hnnd as V. pimilliii CorES. In a series of 22 specimens at 

 this moment before me, including 11 from Arizona (cmhrncing several so-called "intermediate" examples), 

 there is not the slightest suggestion of intergradation with V. bcllii. 



» Virtopnllcni .Salv., P. Z. S. 18B.'?, 1S8. 



> Vireo guntUnrhi I,EMnEVE, Avcs dc la Cuba, 1850, 29, pi. 5, f.g. 1. 



« Yirto hypochniieui, Srr,., P. Z. S. I.«(i2, .lOn. pi. -16. 



» Hj/lophilut Temm., pi. Col. iii. Livr. 23, \S23, tc.\t, and pi. 17", rig. 1. Type, //. itioradcm Tkmm. 



