360 



ZOOLOGY— BIRDS. 



(flaviventris). This latter bird I have often seen in the spring in Massachu- 

 setts, and can speak with certainty of the exact similarity of their habits and 

 motions, a similarity still further borne out in the close resemblance of 

 the two birds. If distinguishable as a race, the western variety appears not 

 to have undergone a very marked differentiation, and the characters assigned 

 to it seem not to be very trenchant. 



No. 



342 

 454 

 467 



722 

 112 



J'3 

 2S9 

 312 



Sex. 



9 ad. 

 S ad. 

 Jjun. 



9 

 i ad. 

 t ad. 

 1 ad. 

 9jun. 



Locality. 



Date. 



II. W. Henshaw. 



do 



do 



Rio Grande, Colo .... June 14, 1873 



FortWingate, N. Mex. July 18, 1S73 



Inscription Rock, N. July 23, 1873 

 Mex. 



South Apache, N. Mex. Sept. 8,1873 do . 



Willow Spring, Ariz.. July 13, 1874; do. 



do do do 



Mount Graham, Ariz .. Aug. 3,1874 do 



Camp Bowie, Ariz Aug. 8, 1874 J. M. Rutter . 



Collector. 



Wing. 



2.57 

 2.95 

 2.54 



2.60 



2-93 

 2.95 

 2. 76 

 2.58 



Tail. 



Bill. 



Tarsus. 



2-37 



o.43 



0. 62 



2.63 



o-53 



0.66 



2-35 



0.4S 



0.64 



2.40 



°-53 



0. 71 



2.74 



0.48 



0.68 



2.75 



0.47 



0.63 



2.54 



0. 52 



0.71 



2.43 



0.47 



0.61 



EMPIDONAX OBSCUBUS (Swains.). 



Wright's Flycatcher. 



Empidonax obscurits, Bd., Ives' Col. Exped., 1857-58, pt. iv, 5. — Id., Birds N. A., 1858, 

 200.— Id., V. S.& Mex. Bound. Surv., ii, pt. ii, 1859, Birds, 9, pi. xi, f. 3.— Id., 

 Proe. Acad. Nat. Sci. Pbila., 1859, 303 (Cape Saint Lucas). — Coues, Proc. 

 Acad. Nat. Sci. Pbila., 180G, G2 (Fort Whipple, Ariz.).— Cooper, Birds Gal., 

 i, 1870, 329. 



Empidonax obscurus, Allen, Bui. Mus. Comp. Zool., 1872, 179 (Montana; Colorado; 

 Ogden, Utah). — Coues, Key N. A. Birds, 1872, 176. — Aiken, Proc. Bost. 

 Soc. Nat. Hist., 1872, 200 (Colorado). — Yarrow, Bep. Oru. Specs., 1871, 

 Wheeler's Exped., 1874, 35.— Bd., Brew., & Bidg., N. A. Birds, ii, 1874, 

 3S1, pi. 44, f. 0. — Yarrow & Henshaw, Bep. Oru. Specs., 1872, Wheeler's 

 Exped., 1874, 22.— Henshaw, An. Lye. Nat. Hist. N. Y., xi, 1874, 8.— 

 Id., An. List Birds Utah, 1872, Wheeler's Exped., 1874, 47.— LI., Bep. Oru. 

 Specs., 1873, Wheeler's Exped., 1874, GO, 87. — Coues, Birds Northwest, 

 1874, 258. 



This species is found in both the Middle and Southern Regions, and in 

 many localities is an abundant summer resident, while in others it appears 

 to be almost entirely wanting. In Utah, we obtained but a single specimen; 

 in Eastern Nevada, two. In the Wahsatch and Uintah Mountains, how- 

 ever, Mr. Ridgway found it a numerous species, ami 1 have had a similar 



