\ .•' 



THE 



TRANSACTIONS 



OF THE 



YORKSHIRE .ct..« 



N ATU R AL ISTS' U N iSN. 



PART 5. 



Issued to the Subscribers for the year 1880. 



CONTENTS. 



Series C—CoNCHOLOGY — Sheet 2 (pp. 17 — ^32). 



Annotated List of the Land and Freshwater Molhisca known to inhabit 

 Yorlcshire (continuation, inckiding Dreissena, Neritina, Paludina, 

 . Bythinia, and Valvata). 



William Nelson and John W. Taylor. 



Series D — Articulata — Vol. I. Sheet 7 (pp. 97 — 112). 



Yorkshire Hymenoptera : third list, based upon observations inade in 

 1879, 1880 and 1881 (conclusion). 



S. D. Bairstow, F.L.S., 

 W. Denison Roebuck, and 

 Thomas Wilson. 



Series D — Articulata — Vol. 11. Sheet a (pp. i— 14). 



List of Yorkshire Lepidoptera (Introduction and commencement of the 

 List of 'Butterflies). 



Geo. T. Porritt, F.L.S. 



Series E— Botany — Sheet 8 (pp. 105 — 120). 



Report of the Botanical Section for 1879 (concluded). 



William West. 



Report on Yorkshire Botany for 1880 (commencement), with 

 Plate of Carex saxiunbra. 



F. Arnold Lees, F.L.S. - 



W. SATCHKLL AND CO., 12, TAVISTOCK STREET, W.C. 

 LEEDS; TAYLOR BROS., PRINTERS, ST. ANN STREET. 



APRIL, 1883. 



