50 SIXGING BIRDS— OSCrNTES. 



neath, brownish-white, scarcely darker on the sides. Lenfrth, about 4.20 inches ; wing, 

 2.15; tail, 2.50. 



Ilab. Soullicrn Rocky Mountains (to Sierra Kcvada, Cal. C.') Gruber.) 



This species was found liy r)r. Keiinerly, along the eastern branch&s of the 

 Colorado, and probably at times comes down to that valley, though I saw 

 none of them at Fort Mojave. According to Dr. Kennerly, they seem to 

 have much the same habits as P. minivius, but frequented the tops of the 

 leafless cottonwood-trees, probably where there were few if any others. He 

 notes that specimens from the Little Colorado all had dark eyes, while those 

 from Williams Fork had yellow. This is a diiference never noticed before 

 in small birds of the same species, though common among hawks, depending 

 on difference of age. 



Dr. Coues found tlie s])ecies alnmdant at Fort "Whipple, Arizona, and no- 

 ticed the same difference in the color of the eyes. 



Genis AURIPARUS, P.-urd. 



Atiriparus, Baikd, Rev. X. Amer. Birds, 8.i. .Inly, 1S.')4. (Type, ^Eyllhahtsflaviceps, SuND.) 



Gex. Char. Form sylvicoline. Bill conical, nearly straight, and very acute : the com- 

 missure very slightly and gently curved. Xostrils concealed by decumbent bristles. 



Wings long, Httlc roundeil : the first quill ludC the second : third, fourth, and fifth quills 

 nearly equal and longest. Tail slightly gi-aduated. Lateral toes equal, the anterior muted 



