BREWSTER: BIKDS OF THE CAPE KEGION, LOWER CALIFORNIA. 179 



Lower California on their way to and from western Mexico, where celata is 

 common in spring and autumn. It is said to winter in southern Mexico, the 

 extreme southern limit of its known range at that season being Guatemahi. 



Helminthophila celata lutescens (Ridgw.). 

 LuTESCEXT Warbler. 



(?) Helmiitihophcuja celata (not Sylvia celata Say) Baird, Rev. Amer. Birds, pt. I. 



1864, 1865, 176, 177 (San Jose'; Cape St. Lucas). 

 Helminthophila celata lutescens Belding, Proc. U. S. Nat. Mus.. V. 1883, 5-36 (Cape 



Region); VI. 1883, 347 (Victoria Mts.). Brt.a.nt, Proc. Calif. Acad. Sci., 



2d ser., II. 1889, .308 (Cape Region). Townsend, Proc. U. S. Nat. Mus., 



XIII. 1890, 137 (Cape St. Lucas). 



This, the characteristic form of the Cape Region, is a rather common winter 

 resident, arriving from the north early in October and departing again before 

 the end of February, according to Mr. Frazar, who took no specimens later 

 than February 9. He found the bird at La Paz, San Jose del Caho, Santiago, 

 Triunfo, and San Jose del Rancho, but not on the Sierra de la Laguna. Mr. 

 Bryant records it from Santa Margarita Island (January), Comondu (]\Iarch), 

 San Benito Caiion (April 10), and El Rosario (May 21), while .Mr. Anthony 

 has met with it during the spring migration (in late April and early ilay) at 

 San Fernando and about the base of San Pedro Martir.^ 



H. c. lutescens winters as far north as San Diego. Its summer range includes 

 most of California and the regions northward to Alaska, chiefly on the Pacific 

 slope. I have typical specimens from western Mexico. 



Dendroica aestiva (Gmel.). 

 Yellow Warbler. 



(?) Dendroeca aestiva Beldixg, Proc. U. S. Nat. Mus., V. 1883, 536, part (Cape 



Region). 

 (1) Dendroica afstivaBRYxsT, Proc. Calif. Acad. Sci., 2d ser, IL 1889, 309, part 



(Cape Region). 



All but one of the eleven Yellow Warlilers obtained in the Cape Region by 

 Mr. Frazar are young birds which were killed in autumn. The exception, a 

 male taken at La Paz on February 5, is in nearly full nuptial condition. This 

 bird seems to be sonorana, while four of the young females (from San Jose del 

 Cabo) are quite typical of that race. The remaining six birds apparently 

 belong to the form which breeds in California, and which, although usually 

 called aestiva, has been referred by a few writers to morcomi.^ It differs rather 



1 Auk, XII. 1895, 142 ; Zoe, IV. 1893, 244. 



2 Dendroica aestiva morcomi Coale, Ridgway Orn. Club, Bull, II. 1887, 82. 



