136 BULLETIN 17 9, UNITED STATES NATIONAL MUSEUM 



Valley, April 29. California — Deatli Valley, March 24; Berkeley, 

 April 9; Red Bluff, April 25. Oregon — Klamath Basin, April 6. 

 Washington — Yakima, May 13. 



Fall migration. — Late dates of fall departure are: California — 

 Berkeley, September 30; Flintridge, October 11. Arizona — Tomb- 

 stone, September 26. Colorado — Mesa County, August 22; El Paso 

 County, September 28. Texas — Bonham, October 17. New Mexico — 

 Silver City, November 20. 



Casual records. — A pair was seen on May 24, 1925, at Tacoma, 

 Wash., which is north of the range as now known. One also was 

 reported as seen near Libby, Mont., on September 4 and 5, 1924. A 

 specimen was collected at Cheyenne, Wyo., on June 6, 1896, while 

 tM'O have been taken in Colorado east of the mountains, one at 

 Gaume's Ranch in Baca County, on May 25, 1905, and the other in 

 the Clear Creek Valley, near Denver, on September 17, 1911. 



Egg dates. — Arizona: 22 records, May 6 to June 26; 12 records. 

 May 21 to June 23, indicating the height of the season. 



California: 79 records, April 12 to July 5; 41 records. May 25 to 

 June 11. 



Lower California : 8 records, March 13 to July 11. 



Texas : 5 records, May 19 to June 4. 



MYIARCHUS CINERASCENS PERTINAX Baird 



LOWER CALIFORNIA FLYCATCHER 



HABFTS 



The Lower California race of the ash-throated flycatcher is found 

 in the Cape region of this peninsula, and thence northward to about 

 latitude 30°, where it intergrades with the northern form. 



William Brewster (1902), referring to the characters of this sub- 

 species, states: "My specimens from the Cape Region differ rather 

 constantly from those from western Mexico and the United States 

 in having longer as well as usually stouter bills. They are also al- 

 most invariably grayer above, especially on the crown and nape, and 

 less yellowish on the abdomen, crissum, under tail coverts, and flanks. 

 The grayish on the nape is often so pronounced as to form an obscure 

 but noticeable band or collar. In autumnal plumage the abdomen, 

 flanks, crissum, and under tail coverts are primose yellow, the back 

 faintly tinged with olive, the light edging of the secondaries and 

 wing coverts slightly olivaceous; otherwise this plumage does not 

 differ materially from that of spring." 



He says further : "Its favorite haunts are arid, cactus-grown plains 

 in the low country near the coast, but it also frequents thickets, where 

 they are to be found." 



