478 NORTH AMERICAN BIRDS. 



California (north through Sacramento Valley), Lower 

 California, and Arizona. 



633a. V. belli! pusillus (COUES). Least Vireo.i 

 e 1 . Middle wing-coverts 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. Hab. West coast of Nicaragua 

 and Costa Eica. 



V. pallens SALT. Pale Vireo. 2 

 d*. "Wing 2.50, or more, tail 2.40, or more. 



Colors as in V. pusillus, but lores entirely grayish white, 

 and band across tips of greater 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. Hab. Southern California, Arizona, New Mexico, 

 western Texas, and northwestern Mexico. 



634. V. vicinior COUES. Gray Vireo. 

 e*. Lower parts yellow. 



d 1 . Above dull grayish olive, the wings with two very narrow whitisa 

 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. 



d 1 . Above bright yellowish 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. Hab. Southwestern Mexico (Oaxaca to Tres Marias). 



V. hypochryseus SCL. Yellow Vireo.* 



GENTS HYLOPHILUS TEMMINCK.' (Page 469, 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 portions ; beneath plain light olive 

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

 whitish. 



1 Unquestionably a good species, which should stand as V. purillui COUES. In a series of 22 specimens at 

 this moment before me, including 1 1 from Arizona (embracing several so-called "intermediate" examples), 

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



> Vireo pallent SALT., P. Z. 8. 1863, 188. 



3 Vireo gundlachi LEMBETE, Ares de la Cuba, 1850, 29, pi. 5, fig. 1. 



Vireo hypoehryteut SCL., P. Z. S. 1862, 390, pi. 46. 



Hylophilut TEMM., PI. Col. iii. Livr. 29, 1823, text, and pi. 173, fig. 1. Type, H. thoracicut TEKM. 



