TO CO-RESPONDENTS. 



The naturalist is ptiblislied on the first of every month, subscription 4/- 

 a year, post free, payable in advance. The volume commences in August of each 

 year. Subscribers to Vol. VI. who have not already sent in their subscrij)tions 

 are reqviested to do ^o at once ; and intending new subscribers should send in 

 their names immediately, 



All communications, except Advertisements, Exchanges, or Short Queries, 

 should, if possible, be in^theJiands of the Editors not later than the 18th of the 

 current month, to insure insertion in our next issue, and should be written on 

 ^ne side of the sheet only. _ 



Authors wishing for REPRINTS of their Papers can have them on the 

 following terms, but the order must accompany the MS. :-T-Not exceeding four 

 pages, 25 copies 43., 50 copies 5s., 100 copies 6s. 6n, Not exceeding eight 

 pages, 25 copies 5s., 50 copies 6s. 6d., lOO copies 9s,, and so on in propor- 

 tion. Printed covers and separate title pages extra. 



ALL COMMUNICATIONS MUST BE ADDRESSED TO THE EDITORS 

 CARE OF MR. B. BROWN, PUBLISHER, HUDDERSFIELD. 



TRA NSA CTIONS of the YORKSHIRE NA JURA LIS TS' UNION. 



PART I. FOR 1877 contains the commencement of "The Birds of Yorkshire, " 

 by Mr. W. E. Clarke, M.B.O U. ; of an " Annotated List of the Land and Fresh- 

 water Mollusca of Yorkshire," by Messrs. Wm. Nelson and J. W. Taylor .; a 

 complete list of Yorkshire HymenoiDtera, with refereiices to literature of that 

 order, by Mr, W. Denison Roebuck ; _ a paper on " Yorkshire Macro-lepidoptera 

 in 1877," by Mr. G. T. Porritt, F.L.S. ; one on "Yorkshire Micro-lepidoptera' 

 in 1877," by Mr. Wm. Prest ; papers by Mr. S. L. Mosley, on " Yorkshire Diptera,' 

 and -on the Yorkshire species of Hemiptera of the- Family Psyllidce; and a 

 .eport on Yorkshire Botany in 1877, by Dr. H. F. Parsons, F.G.S, 



PARTS II. AND III. FOR 1878 contain the continuations of Mr. Clarke's 

 Birds of Yorkshire, and of Messrs. Nelson and Taylor's Land and Fresh-water 

 Mollusca of Yorkshire ; an elaborate report on Yorkshire Botany in 1878, by 

 Dr. Parsons; the commencement of Dr. Parsons' "Moss-Flora of the East- 

 Riding " ; papers on Yorkshire Lepidoptera in 1878, by Mr. Porritt, F.L.S. : on 

 Yorkshire Ichneumonidce, by Mr, S. D. Bairstow, F.L.S. ; and on Yorkshire 

 Hymenoptera,. observed in 1878, by Mr. W. Denison Roebuck. 



W, Denison Roebuck, Suniiy Bank, ■. 



Leeds, r lo... 



Wm. E. Clarke, ].^ecs. 

 5, East View, Hyde Park Road, Leeds, / 



H. W. MARSDEN, 



NATURAL HISTORY AGENT AND BOOKSELLER. 



Cabinets and apparatus of all kinds, of the best make on the lowest terms. 



British and European Macro-Lepidoptera, Preserved Larvae of rare British 

 Lepidoptera, 



BOOKS,— New and Second-hand, on Natxiral History Subjects. 



The largest and best stock of Bird-Skins and Birds' Eggs in England. Catalogues 

 on application. 



'*Bij0U List of British Butterflies," Beautifully printed in colours 



6d., 



'' Graduated List of British Birds," specially f prepared for 

 reference and labelling, 6d. 

 " Lepidopterists' Calendar," Limp Cloth, 3/6. Interleaved, 5/- 



REGENT STREET, GLOUCESTER. 



