TRANSACTIONS OF THE 

 YORKSHIRE NATURALISTS' UNION, 



SPEC/ALLY OFFERED TO REDUCE STOCK. 



To all orders g-iven immediately, the ' Transactions of the Yorkshire Naturalists' 

 Union' will be issued at a quarter of the published price — minimum order 5s. The 

 following- is a list of the parts already published, with their prices. Readers of 

 'The Naturalist' can either buy a set outrig-ht at the cost of I5S. , or can 

 complete their sets by selecting- any numbers of the Transactions. Detailed 

 particulars of the contents of the various volumes can be had from the 

 Secretary of the Union, The Museum, Hull. 



Second Edition in the Press, Price 6s. 6d. 



LIST OF YORKSHIRE LEPIDOPTERA, 



By G. T. PORRITT, F.L.S., F.E.S., 



Past- President of the Yorkshire Naturalists' Union, etc. 



The First Edition of this work was published in 1883, and con- 

 tained particulars of 1,340 species of Macro- and Micro- Lepidoptera, 

 known to inhabit the county of York. 



The Second Edition, now in the press, will contain much additional 

 information which has been accumulated by the author, including- over 

 50 additional species, together with copious notes on variation (par- 

 ticularly melanism), etc. 



Intending subscribers should send in their names at once to the 

 Hon. Secretary of the Yorkshire Naturalists' Union, The Museum, Hull. 



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