Diary.— Meetings of Societies. 



April 1. Bradford Scientific Association : Paper by J. Maffey, L.R.C.P. 



Selby Xaturalists' : Lecture on " The Development Theory of 

 the Universe." by J. E. .Clarke, B.A., B. Sc., of York. 



„ 2. Goole Scientific Society. 



„ o. Huddersfield Scientific Club. 



„ 6. Liversedge Naturalists'. Bishop Auckland Naturalists'. Leeds 



Naturalists' Club, &;c. — Entomological Section. 

 „ 7. Wakefield Naturalists'. 



,, 8. Bradford Scientific Association : Paper by P. Ross. Dewsbury 



Naturalists'. 

 „ 9. Huddersfield Scientific Club. 



„ 13. Leeds Naturalists' Club, &c. — Microscopical and Botanical Sections. 



Bradford Naturalists' Society. — " Fossils." — H. Hebblethwaite. 

 ,. 14. York and District Field Naturalists'. 



„ 15. Bradford Scientific Association : Paper by J. Mafi'ey, L.R.C.P. 



Selby Naturalists' : Paper on "The Fauna of the District," by 



T. L. Matthewman. 

 „ 17. Huddersfield Naturalists' Society. 

 „ 19. Manchester Cryptogamic. 



,, 23. Leeds Naturalists' Club, &c. — Yetebrate Section. 



,, 22. Bradford Scientific Association. — Microscopical Evening. 



„ 26. Lancashire and Cheshire Entomological. 



„ 27. Leeds Naturalists' Club, &c. Lecture : " The two great Limestones 

 of the West-Riding of Yorkshire," bv Prof. A. H. Green, M.A., 

 F.G.S. Bradford Naturalists'.—" The Fresh Water Mussel."— 

 Mr. Lishman. 



,, 29. Bradford Scientific Association : Paper by H. Rowntree. 



"^TT'ILL any Botanist meeting with Potaniogetons or Ckaras during the ensuing 

 V V season kindly send me fresh or dried specimens, especially if in fruit f 

 I shall be very pleased to send rare Southern, South-eastern, or Eastern flowering 

 plants in exchange, either living or dried. 



(P. crispus, densus, and jjolygonifoUus not wanted). — A. B., 107, High Street, 

 Croydon, Surrey. 



TRA NSA C TIONS of the YORKSHIRE NA JURA LIS TS' UNION. 



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

 Yorkshire," by Mr. W. E. Clarke ; of an " Annotated List of the Land and Fresh- 

 water Mollusca 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. AY. Depison Roebuck ; a paper on " Yorkshire Macro-lepidoptera 

 in 1877," by Mr. G. T. Porritt, F.L.S. ; one on " Yorkshii'e 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 

 report an Yorkshire Botany in 1877. 



PARTS II. AND III. FOR 1878 contain the continuations of IVIr. 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 IchneumonidcB, by INIr. S. D. Bairstow, F.L.S. ; and on Yorkshire 

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



PART IV. FOR 1879, in preparation. — Amongst papers in preparation for 

 future -parts is a Catologue of Yorkshire Lepidoptera, to be written by Messrs. 

 G. T. Porritt, F.L.S., and W. Prest. 



The Transactions are supplied to subscribers of 5/- and upwards, annually 

 to the funds of the Union. Intending subscribers are invited to send their names 

 to either of the Secretaries. 



Geo. Brook, ter, F.L.S., Fernbrook, \ 



Edgerton, Huddersfield, [ o 



^y. Denison Roebuck, Sunny Bank, i" 

 Leeds, ^ 



