142 Bhewsier o}} a Collcrtio)! of Arizona Birds. 



45. Vireo gilvus ( lid//.) Jionap. Warbling \'ikp:o. — • 

 Fouiul among all the w L'll-timl)cTecl mountains visited. ])ut no- 

 where as a common bird. 



Of the several characters which are said to distinguish \ar. swaiiiso)ti 

 from gilvus proper. I can appreciate only the slightly different shape of 

 the bill. The relative length of the wing-quills is an absolutely inconstant 

 characteristic with birds from any of the localities represented in my series, 

 while I do not find that western specimens — at least California and Ari- 

 zona ones — are either paler or graver than nian\ we get in the Atlantic 

 States. Indeed, nearh- the darkest one in w\\ whole suite comes tVoni 

 Arizona. In view of these facts 1 cann(;t regard swaiiisofii as worthv of 

 varietal recognition. 



46. Vireo solitarius cassini {Xantus) Rid^zv. Ca.ssix's 

 \"iREO. — Common among the foot-hills of the motmtains. 



Mr. Henshaw has so satisfactorily defined* the characters which respect- 

 ivelv distinguish the Cassin's and Plumbeous Vireos from solitarius 

 proper, as well as from each other, that there is no room for any further 

 remarks on what, previous to his examination, was a very tangled problem. 

 The specimens mentioned below are all unmistakably referable to cassini, 

 although one or two of them present slight approaches to phnnbeus. It 

 is a singular fact that Mr. Stephens did not meet with anv typical exam- 

 ples of the latter race. 



209, $ ad., Cienega Station, April 16. Length. 5.40: extent. 8.70. 

 '•Iris brown; bill dark horn-color above, lighter below; legs dark bluish." 



214. $ ad., same locality and date. Length. 5.60; extent. 9.10: wing, 

 3: tail. 2.44. 



236. $ ad.. Tucson, .\pril 19. Length. 5.60: extent. S.70: wing. 2. 89: 

 tail. 2.41. 



y6, $ ad.. Tucson. Ma_\- 2. Length. 5.30: extent. 8.50: wing. 2.71: 

 tail. 2.26. 



346. $ ad., Tucson >hiy 7. Length, .^.30: extent. 9: wing. 2.76; tail, 

 2.25. 'A^erv fat. Would not have laid for a long time." 



3^4. J ad.. Santa Rita .Mountains. Ma\ 11. Length. 5.10: extent. 8.80; 

 wing. 2.S2 ; tail, 2.27. 'Tris brown: bill nearh' black, bluish at base 

 below: legs lead-color." 



47. Vireo huttoni Stephens! 7v?y-. //r^-. Stephens' \'ireo. 



Cn. Sp. — (J $ Similis L. //ulloni s^td rostro robustiori. alls longioribus. 

 Supra griseo-cinereus, infra fusco-albidus. Urop_\gio et niarginibus cau- 

 dcE sordide virenti-olivaceis. Alis albo bifasciatis ; remigibus albo-mar- 

 "■inatis. Loris et orbe circum-oculari (macula fusco-brunnea in palpebra 

 superior! excepta), cinereo-albis. 



Adult J (No. 5,728, author's collection — collector's No.. 41 — Chiricahua 

 Mountains, iVrizona, March 14, 1881. F. Stephens). Bill stout; wings 

 from .30 to .40 inches longer than tail. Above grayish-ash ; the crown. 



* U. S. Geo!. Surveys W. 100 .VIerid., 1879, pp. 291-253. 



