TO CORRESPONDENTS. 



The naturalist is publislied on the first of every montli, siibscr"ption 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 tbeir subscriptions 

 are requested to do so 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 the liands of the Editors not later than the 18th of the 

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

 one side of the sheet only. 



Authors wishing for EEPRINTS of their PxVPErs can have them on the 

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

 pages, 25 copies 4s., 50 copies 5s., 100 copies 6s. 6d. Not exceeding eight 

 pages, 25 copies 5s., 50 copies 6s. 6u., 100 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 C TIONS of the YORKSHIRE NA JURA US TS' UNION. 



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

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

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

 complete list of Yorkshire Hymenoptera, with references to literature of that 

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

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

 in 1877," by Mr. Wm. Prest ; papers by Mr. S. L. Mosley, on " Yorksliire 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 11. 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 Ichneumonido3, by Mr. S. D. Bau'stow, F.L.S. ; and on Yorkshire 

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



\V. Denison Roebuck, Sunny Bank, v 



Leeds, | ^ 



Wm. E. Clarke, p^*^^* 

 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 Natural History Subjects. 



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

 on application. 



"Bijou List of British Butterflies," Beautifully printed in colours 



6d., 



** Graduated List of British Birds." specially prepared for 

 reference and labelling, 6d. 

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



REGENT STREET, GLOUCESTER. 



