118 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
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 almost 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 primrose 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. 
The peculiarities above mentioned seem to me sufficiently pronounced to 
entitle this bird to subspecific separation from cimerascens. Baird as long ago as 
1859 remarked the “rather stouter bill” which, he adds, ‘‘ appears to be a con- 
stant character, and may one day cause its [the Lower California bird’s] separa- 
tion as a species. (MM. pertinax, Baird).” Hence the form is already supplied 
with a name under which I have ventured to reinstate it here. 
This Flycatcher is resident in the Cape Region from La Paz southward, 
but Mr. Frazar saw only a very few at San José del Cabo, and none on the 
Sierra de la Laguna. 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. 
Just how far to the northward on the Peninsula pertinaxz ranges before merg- 
ing into or giving place to true cinerascens I am unable to state. Mr. Bryant, 
who does not discriminate between the two forms, says that the Ash-throated 
Flycatcher is “one of the most generally distributed species found in Lower 
California.” . 
Sayornis saya (Bonap.). 
Say’s PHOEBE. 
Sayornis sayi BeLprnG, Proc. U. S. Nat. Mus., V. 1883, 541 (Cape Region). 
Sayornis saya Bryant, Proc. Calif. Sci. 2d ser., II. 1889, 290 (Cape Region). 
Say’s Phoebe occurs in the Cape Region only during winter, and even then 
it is apparently rare. Mr. Frazar took but three specimens, all at La Paz, in 
February. The species breeds in the northern portion of the Peninsula, for 
Mr. Anthony found some nests ‘in old mines and tunnels at Valladares, fre- 
quently at a depth of twenty feet in a shaft” (Bryant). In California it is 
resident as far north as Sebastopol. It ranges northward in summer along 
the Yukon River to the Arctic Circle, and southward in winter, on the plateau 
of Mexico, to Puebla and central Vera Cruz.} 
1 A. O. U., Check List, 2d ed., 1895, 185. 
