YORKSHIRE—VERTEBRATE FAUNA. XXXVid 
In addition to the fifty-eight, Richard’s Pipit has been 
reported to occur, but upon evidence which cannot be admitted, 
from the lack of details necessary to substantiate its claim, 
although the species is one quite likely to occur. 
In addition to the Sixry-FIVE ACCIDENTAL VISITANTS in- 
cluded in the table at p. xxxiv, there are ten—the Purple Martin, 
Great Black Woodpecker, Hairy Woodpecker, Little Owl, Acadian 
Owl, Harlequin Duck, Passenger Pigeon (escape), Virginian Colin 
(introduction into Britain), Sooty Tern, and Laughing Gull— 
whose claims to a place in the Yorkshire fauna must be 
regarded as inadequate, though it is quite possible that further 
investigation may show some of them to have been genuine 
occurrences. 
Four species which have occurred in Yorkshire—the Mottled 
Owl, Lesser Kestrel, Cuneate-tailed Gull, and Bulwer’s Petrel— 
have not been known to visit any other British locality, and the 
one last named has not even occurred elsewhere in Europe. 
As to the occurrence of the Mottled Owl, there is no reason 
to doubt its validity, for Dr. Hobson thoroughly sifted the 
evidence at the time. 
Regarding the Lesser Kestrel—another species whose occur- 
rence has been challenged—the writers are perfectly convinced, 
from their personal acquaintance with the gentleman who obtained 
it, that it was a genuine one. Mr. Harrison shot the bird solely on 
account of its diminutive size, and after he had observed it about 
his residence for some days. It has been suggested that Graham, 
of York, to whom the specimen was taken for preservation, sub- 
stituted for it a foreign skin; but Mr. Harrison, whose attention 
was particularly impressed by the bird, and who is, moreover, a 
good ornithologist, could hardly have been imposed upon in such 
a manner. ‘The geographical range of the species would not 
preclude its visiting Britain, and it has been known to occur at 
Heligoland, immediately opposite the Yorkshire coast. The time 
of year has also been urged as an argument against the validity 
of the occurrence, but it may be pointed out that the Hobby— 
usually regarded as a summer visitant—has on several occasions 
been taken in Yorkshire in mid-winter. 
