PASSERES— SYLVICOLIDAE— GEOTHLYPIS MACGILLIVRAYI. 205 



Bbew., & RiDG., N. A. Birds, i, 1874, 297, pi. xv, f. 4.— Yakrow & HENsnAAV, 

 Rep. Orn. Specs., 1872, Wheeler's Esped., 1874, 10.— Hensuaw, Au. Lye. 

 Nat. Hist. N. Y., xi, 1874, 4.— Jrf., An. List Birds Utali, 1872, Wheeler's 

 Exped., 1874, 42.— Id., Rep. Orn. Specs., 1873, Wheeler's Exped., 1874, 50, 

 103.— Allen, Proc. Bost. Soc. Nat. Hist., June, 1874, 15, 22.— Coues, Birds 

 Northwest, 1874, 74. 



Trichas marylandicus, WoODH., Sitgreave's Exp. Zuui &.C0I. Eiv., 1854, 71. 



Trichas delafieldii, Heeem., P. R. R. Rep., x, pt. iv, 1859, 40. 



This species has been found by our parties in various parts of Utah 

 and Colorado, although it appears to be not so common as at the East. 

 The thickets by the water courses and the damp meadowy grounds of the 

 lowlands are its places of resort. In Arizona, it appears to be rare; and I 

 have met with it but twice, at Camp Apache, and again at Camp Grant. It 

 is a summer resident. 



GEOTHLYPIS MACGILLIVRAYI, Baird. 

 MacGillivray's W^arbler. 



Sylvia macgillivrayi, AuD., Orn. Biog., v, 1839, 75, pi. cecxcix. 



Geothhjpis macgillivrayi, Bd., U. S. & Mex. Bound. Surv., ii, pt. ii, 1859, Birds, 

 10.— Z^Z., Birds N. A., 1858, 244, pi. 99, f. 4.— Xantus, Proc! Acad! 

 Nat. Sci. Phila., 1859, 191 {Fort Tejou, Cal.).— Henry, Proc. Acad. 

 Nat. Sci. Phila., 1859, 106 (New Mexico).— Coop. & Suckl., P. R. R. 

 Rep., xii, pt. ii, ISGO, 177.— Bd., Rev. Am. Birds, i, 1865, 227.— 

 CouES, Proc. Acad. Nat. Sci. Phila., 1866, 70 (Fort Whii)ple, Ariz.).— 

 Cooper, Am. Nat., iii, 1869, 32.— Id., Proc. Cal. Acad., 1870, 75 (Colorado 

 River).- Jf/., Birds Cal., i, 1870, 96.— CouES, Key N. A. Birds, 1872, 107.— 

 Allen, Bui. Mas. Comp. Zoo!., 1872, 175 (Eastern Kansas; Colorado).— 

 Aiken, Proc. Bost. Soc. Nat. Hist., 1872, 197.— Ridg., Am. Jour., Dec, 

 18v2, 459.— Yarrow & Henshaw, Rep. Orn. Specs., 1872, Wheel- 

 er's Exped., 1874, 10.— Henshaw, An. Lye. Nat. Hist. N. Y., xi, 1874, 4.— Id., 

 Au. List Birds Utah, 1872, Wheeler's Exped., 1874, 42.— Id., Rep. Orn. 

 Specs., 1873, Wheeler's Exped., 1874, 59, 75, 103.— Bd., Brew., & Ridg., N. 

 A. Birds, i, 1874, 303, pi. xv, f. 4, 5.— Allen, Proc. Bost. Soc. Nat. Hist., 

 June, 1874, 22.— CouES, Birds Northwest, 1874, 75. 



Trichas tolmimi, Heerm., P. R. R. Rep., x, pt. iv, 1859, 40. 



Tlie MacGilHvray's Warbler is one of the most characteristic of the 

 family thi-oughout the Middle Region, and has been detected by the 



