1915 ; HYPOTHETICAL LIST 181 
27 (310, subsp. ?) Meleagris gallopavo (Linnaeus) 
Witp TurKEY 
Status—Turkeys, of unknown subspecies, supposedly from wild stock in 
some part of Mexico, have been liberated in recent years in a number of counties 
from Humboldt and Shasta to San Diego, particularly ‘‘in the lower Sierra 
Nevada region”’ (Calif. Fish and Game Comm., 22nd Biennial Rep., 1913, pp. 
23-24). According to information gathered by A. D. Ferguson (Calif. Fish and 
Game Comm., Game Bull. no. 1, 1913, pp. 35-40) the birds introduced in 1910-11 
in the vicinity of the Sequoia and General Grant National Parks are so far appar- 
ently holding their own. 
28 (14, hyp.) Buteo cooperi Cassin 
CoopErR HENHAWK 
Synonym—California Hawk. 
Status—Known only from the type specimen shot by J. G. Cooper near 
Mountain View, Santa Clara County, November, 1855 (Cassin, Proc. Acad. Nat. 
Sci. Phila., 1856, p. 253; J. G. Cooper, Pac. R. R. Rep., xu, 1860, p. 148; J. G. 
Cooper, Orn. Calif., 1, 1870, p. 472; ete.). The specimen is still extant, in the 
U.S. National Museum (no. 8525) ; the latest study of the case (Ridgway, Auk, 
m1, 1885, p. 165) results in no definite conclusion. The bird was evidently nearly 
related to the Buteo borealis group. The date of capture, as recorded in the 
Smithsonian records (as I am informed by Dr. C. W. Richmond) is given as 
“October, 1856’. This is also the date quoted in the A. O. U. Check-List (3rd 
ed., 1910, p. 372). But that both are wrong is shown by Cooper’s repeated state- 
ment as above, and also that Cassin published the description in the Philadel- 
phia Academy Proceedings for October, 1856, which date of publication obvi- 
ously could not have been the date of capture, as well. (See also Ridgway, Auk, 
1, 1884, p. 253.) 
29 (—_) Buteo solitarius Cassin 
HawanAn Hawk 
Synonyms—Onychotes gruberi; Onychotes solitarius; Gruber Hawk. 
Status—Originally described as new under the name Onychotes gruberi 
(Ridgway, Proe. Acad. Nat. Sci. Phila., 1870, p. 149) from a specimen with no 
more definite locality than ‘‘California’’. Later (Ridgway, Proce. U. S. Nat. 
Mus., vit, 1885, p. 86), this specimen was found to be identical with the Hawaii- 
an species, Onychotes (—Buteo) solitarius, thus making it improbable that it 
was obtained in California as alleged. However, Henshaw (Auk, xvi, 1901, p. 
162) records that an individual of the Hawaiian Hawk voluntarily accompanied 
a vessel part way from Hilo to San Francisco; so that the casual occurrence of 
the species in California is within possibility, but not proven. 
30 (341) Buteo albicaudatus sennetti Allen 
SENNETT WHITE-TAILED HAwK 
A hawk thought to have been of this Mexican species was seen at Golden 
