PREFACE. 



Gibson-Robertshaw, A 

 Hall, A 



Ellenroyde, Midgle}', 



Luddenden Foot. A. G-R. 



E., F.E.S., Norbury, Pitsmoor, 



Sheffield. A.E.H. 



Halliday, E., Salisbury Place, 



Akroydon, Halifax. E. Halliday .- 



Hawkins, J., Tower Street, York J. Hawkins. 



Hewett, William, 12, Howard Street, York. ... W. H. 



Jackson, Georg"e (the late), York G.J. 



Johnson, W., 4, St. John Street, Beverley. ... W.J. 



Lowther, J. R., Crane Hill, Beverley J.R.L^ 



Lofthouse, T. Ashton, F. E.S., The Croft, 



Linthorpe, Middlesbrough. T.A.L. 



Mansbridg-e, W., 27, Elenbank Road, 



Sefton Park, Liverpool. W. M.. 



Meldrum, T., Ripon T.M. 



Morley, B., Wind Mill, Skelmanthorpe, 



Huddersfield. B.M.. 



Pickering, W. J W.J. P.. 



Porter, J.', 60, Tadnian Street, 



Hessle Road, Hull. J. Porter. 



Sachse, W., 17, Kensington Road, Middlesbrough. W. S. 



Sumner, J., St. Andrews, Ilketshall, 



Bungay, Suffolk. J. Sumner. 



Thompson, Ben Blavdes, 6, Benson Road, 



Forest Hill, London, S.E. B.B.T. 



Tunstall, Wilmot, F.E. S., Brook House, 



Meltham, near Huddersfield. W. Tunstall. 



Walker, Samuel, Queen Anne's Road, York.... S.W. 



Whitaker, Arthur, Saville House, 



Worsborough, near Barnsley. A.W. 



Wigin, J., Methley, near Leeds. J-W. 



Wright, Albert E., 60, Tentre Street, Burnley. A.E.W. 



Yorkshire Naturalists' Union Y.N.U. 



Young, J. N. (the late), Rotherham J-N.\'. 



I have also to express my indebtedness to m}- friend Mr. 

 W. Denison Roebuck, F.L.S., for valuable suggestions and 



