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TRANSACTIONS of theYORKSH I RE NATURALISTS' UNION. 



PARTS V. AND VI. have lately been published, and contain the " List of 

 Yorkshire Lepidoptera " by Mr. Geo. T. Porritt, F.L. S., the continuation of 

 Xelson and Taylor's " Annoted List of Yorkshire Land and Fresh-water 

 MoUusca (Dreissena, Xeritina, Paludina, Bythinia, add Valvata)," the conclusion 

 of Bairstow, Eoebuck, and "Wilson's third list of "Yorkshire Hynienoptera, ' 

 and the Eeports on "Yorkshire Botany" by Messrs. W. "West and F. Arnold 

 Lees, E.L.S. [with plate of Carex saxumbra. 



The previous Parts may be had at the following prices : — 



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4 ... 1879 ... 2/3 „ 3/- 



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