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TRANSACTIONS of the YORKSHIRE NA TURALISTS' 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 MoUusca of Yorkshire," 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, 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 Yorkshu-e Lepidoptera in 1878, by Mr. Porritt, F.L.S. : on 

 Yorkshire Ichneumonidce, by Mr. S. D. Baii-stow, F.L.S. ; and on Yorkshire 

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



W. Denison Roebuck, Sunny Bank, \ 



Leeds, r.^ 

 Wm. E. Clarke, j 

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



H. W. M.ARSDEN, 



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 Larvse 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/- 



37, MIDLAND ROAD, GLOUCESTER. 



