182 PACIFIC COAST AVIFAUNA No. 11 
Gate Park, San Francisco, November 7, 1905 (J. Mailliard, Condor, vim, 1906, p. 
29). My. Mailliard has in a personal letter to me expressed doubts as to this 
identity ; possibly the bird was a Ferruginous Rough-leg. 
31 (345) Urubitinga anthracina (Lichtenstein) 
Mexican Buack Hawk 
Status—Egegs described, said to have been taken in Los Angeles County, 
April 6, 1889, by R. B. Chapman (Reed, N. Amer. Birds Eggs, 1904, p. 164) ; 
identity extremely doubtful. The record from National City, San Diego County 
(Linton, Condor, rx, 1907, p. 110) proved to be based upon a specimen of Buteo 
abbreviatus (Linton, Condor, x, 1908, p. 181). The Mexican Black Hawk occurs 
regularly north to southern Arizona and Texas. 
32 (362) Polyborus cheriway (Jacquin) 
AUDUBON CARACARA 
Synonyms—Polyborus tharus; Polyborus tharus var. auduboni; Polyborus 
auduboni; Caracara Eagle. 
Status—One individual is recorded as having been seen in the winter of 
1853 on the Colorado River near Fort Yuma, though which side of the river is 
not stated (Heermann, Pac. R. R. Rep., x, 1859, p. 30). The occasional pres- 
ence of this bird in the extreme southeastern corner of the state is to be expected 
as it occurs adjacently in Mexico and southern Arizona; but no actual oceur- 
rence within our borders has as yet been well attested. 
33 (373d) Otus asio kennicotti (Elliot) 
KENNICOTT SCREECH OWL 
Synonym—WMegascops asio kennicotti. 
Status—While this northwest coast form may be expected to occur in the 
extreme northern humid coast belt, particularly in winter, satisfactory evidence 
to this effect is still wanting. Townsend (Proce. U.S. Nat. Mus., x, 1887, p. 203) 
found fragments of an owl thought to be of this form at Baird, Shasta County ; 
and a specimen from Fort Crook, Shasta County, was ‘‘intermediate between 
kennicotti and bendirei’’. Emerson (Condor, vit, 1906, p. 29) records a speci- 
men taken at Haywards, Alameda County, December 15, 1882, as either kenm- 
cotti or a vartant of bendirei, which, is uncertain. 
34 (374a) Otus flammeolus idahoensis (Merriam) 
Dwarr ScrEecH Own 
Synonym—(See Otus flammeolus, p. 72). 
Status—Aseribed to California with expressed reluctance by Oberholser in 
his study of this species (Ornis, x, 1899, [separate, repaged] p. 12), and since 
then accepted as a member of our avifauna by authors at full value. A close 
scrutiny of Oberholser’s analysis of characters of idahoensis as compared with 
flammeolus, and his comment on the varying features of individual specimens, 
leaves the reader with a distinct impression that the name idahoensis rests on 
