AUTHORITIES CONSULTED. 
Of Published Records the authors believe that compara- 
tively little has escaped their notice, all available sources of infor- 
mation, whether natural history journals and publications, or the 
appendices to topographical works, having been carefully 
examined. 
The PRINCIPAL DISTRICT-LISTS which have been contributed 
to the natural history periodicals include Leyland’s list of Halifax 
birds (Loudon’s Mag. N.H., 1828), Williamson’s note on Scar- 
borough birds (Proc. Zool. Soc., 1836), Denny’s list of animals 
occurring near Leeds (Ann. & Mag. N.H., 1840), abstracts of 
Allis’s report on the birds, and Meynell’s on the fishes of York- 
shire (Rep. Brit. Ass., 1844), Hogg’s ‘ Catalogue of Birds observed 
in South-eastern Durham and in North-western Cleveland’ (Zool., 
1845), and Talbot’s Birds of Wakefield (Nat., 1876). 
The chief lists which have appeared in or as appendices 
to topographical works are to be found in Millers History 
of Doncaster (1804), Graves’ History of Cleveland (1808), 
Young’s History of Whitby (1817), Whitaker’s History of Rich- 
mondshire (1823), Hinderwell’s History of Scarborough (1832), 
Lankester’s Account of Askern (1842), Barker’s Three Days of 
Wensleydale (1854), Hobkirk’s History and Natural History of 
Huddersfield (1859, second edition in 1868), Ferguson’s Natural 
History of Redcar (1860), Theakston’s Scarborough Guide (1863 
and subsequent editions), and Hobson’s Life of Charles Waterton 
(1866). 
In addition to these lists, there are innumerable records in the 
periodicals and in natural history and topographical works gene- 
rally, chiefly in the pages of that well-known repertory of infor- 
mation, the ‘ Zoologist,’ and also in the Ibis, the Field, Land 
and Water, Loudon’s Magazine of Natural History, the 
