OKDEE PASSERES. 323 



d. Geothlypis trichas arizela Oberholser. Pacific Yellow -throat. [681c.] 



Geoihlypis trichas arizela Oberholser, Auk, XVI, July. 1899, 257. (Fort 

 Steilaooom, Washington.) 



Range. — Pacific coast region. Breeds in Transition and Sonoran zones 

 from southern British Columbia to southern California and east to Fort 

 Klamath, Oregon; winters south to Cape San Lucas. 



e. Geothljrpis trichas sinuosa Grinnell. Salt Marsh YeUow-throat. [68Ie.] 



Geothlypis trichas sinuosa Grinnell, Condor, III, May, 1901, 65. (Palo 

 Alto, California.) 



Range. — Upper Sonoran Zone in salt marshes about San Francisco Bay, 

 California (in Marin, Contra Costa, Alameda, and Santa Clara counties). 



Geothlypis beldingi Ridgway. Belding's Yellow-throat. [682.] 



Geothlypis beldingi Ridgway, Proc. U. S. Nat. Mus., V, 1882, 344. (San 

 Jos6 del Cabo, Lower California.) 



Range. — Lower Sonoran Zone in the Cape Region of Lower 

 California. 



Genus CHAMiETHLYPIS Ridgway. 



Chamosthlypis Ridgway, Manual N. A. Birds, 1887, 525. Type, by 

 orig. desig., Geothlypis poliocephala Baird. 



Chamaethl3rpis polioc§phala (Baird). Rio Grande Yellow-throat. 



[682.1.] 



Geothlypis poliocephala Baird, Review Amer. Birds, 1865, 225. (Maz- 

 atlan, Sinaloa, Mexico.) 



Range. — Lower Sonoran Zone of the Lower Rio Grande Valley, 

 and northern and central Mexico south to Sinaloa, Michoacan, and 

 Morelos. 



Genus ICTERIA Vieillot. 



Icteria Vieillot, Ois. Amer. Sept., I, 1807, iv, 85. Type, by monotypy, 

 Icleria dumicola Vieillot = Muscicapa viridis Gmelin = Turdus 

 virens Linn^us. 



