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TRA NSA G TIONS of the YORKSHIRE NA TURALIS 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 MoUusca of Yorkshire," by Messrs. Wm. Nelson and J. W. Taylor ; a 

 complete list of Yorkshire Hymenoptera, with references to literatui-e of that 

 order, by Mr. W. Denison Eoebuck ; 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 Hemiptei-a of the Family Psyllidce ; and. a 

 report 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, hj Mr. S. D. Bau'stow, F.L.iS. ; and on Yorkshire 

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



W. Denison Roebuck, Sxmny Bank, . v 

 Leeds, 



Wm. E. Clarke, 



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



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"Bijou List of Britisll Butterflies," Beautifully printed in colour^ 



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Graduated List of British Birds." specially prepared for 

 reference and labelling, 6d. 

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



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