AUTHORITIES CONSULTED. 141 
R. Lofthouse (Middlesborough); R. Morton Middleton, jun., F.L.S. (North- 
allerton, &c.); J. E. Miller (Middleham); *W. J. Milligan (Wetherby) ; 
*F.S. Mitchell (Mitton and Lower Ribblesdale); Walter Morrison (Malham 
Tarn); T.H. Nelson (Redcar and Teesmouth); George Page (Guisborough); 
F. Parkinson (Market Weighton); J. Petyt (Bolton Abbey); G. T. Porritt, 
F L.S. (Huddersfield); Walter Raine (Ryther, Leeds, &c.); F. G. S. Rawson 
(Halifax) ; Lord Ribblesdale (Gisburn); *J. H. Salter (Ackworth and Scar- 
borough); William Scoby (Kirby Moorside); *Rev. H. H. Slater, B.A., F.Z.S. 
(Ripon); *Walter Stamper (Nunnington); *Thos. Stephenson (Whitby); 
*John Tennant (Wilstrop and Skewkirk); Richard G. Tuke (Castle Howard) ; 
J. A. Wheldon (Northallerton); and J. E. Clark. B.A.,B.Sc.,F.G.S., R. M. 
Christy, E. J. Gibbins, C. Helstrip, Wilson, and Woods (York). 
Other contributors of bird-lists, in addition to those marked 
above with the asterisk, are :— 
Messrs. Matthew Bailey (Flamborough); W. W. Boulton (Beverley) ; 
E. P. P. Butterfield (Wilsden); Rev. J. W. Chaloner (Newton Kyme); R. B. 
Cragg (Skipton); Charles Dixon (Sheffield); Alfred Jackson, M.D. (Market 
Weighton) ; Major Lawson (Bridlington); Robert Lee (Thirsk); R. Richardson 
(Beverley); Alfred Roberts (Scarborough); Rev. Henry Smith (Redcar) ; 
Edward Tindall (Knapton); Capt. E. H. Turton (Upsall Castle); J. W. Davis 
(Halifax); and James Varley (Huddersfield). 
Lists of marine fishes have been contributed by the 
following :— 
Messrs. Matthew Bailey (Flamborough); Thomas Boynton (Bridlington 
Bay); John Cordeaux (Holderness Coast); T. H. Nelson (Redcar); Thomas 
Stephenson (Whitby); T. Winson (Spurn Point); and J. W. Woodall 
(Scarborough). 
To all these contributors of local lists the best thanks of the 
authors are due, for it is they who—by furnishing the full and 
indispensable details—have made it possible to give with an 
approximation to accuracy the actual geographical range of the 
various species. Hence it will be seen that the few words allotted 
to each species are founded upon a broad and substantial sub- 
‘stratum of facts contributed by numerous observers, and that it is 
only in the few instances where records are vouched for by single 
observers that the citation of authorities has been possible in 
the text. 
But the contributors of lists are not the only persons to whom 
the authors are indebted for assistance. Acknowledgment is due 
to Professor Alfred Newton, M.A., F.RS., Dr. Giinther, F.R.S., 
