tkOCEEDiiNGS : MARCH i^Til, I91S. 283 



Exhibits. 



By Mr. G. C. Spence : Vitrea ceUai-ia from several localities ; also V. liicida 

 from Rhos, Colwyn Bay. 



By Mr. \V. H. Davies : Young forma of Anodonta cygnisa from the Bridgewater 

 Canal, Booth's Hall Bridge, near Worsley, Lanes., showing umbonal markings; 

 also a fine series of Unio tmnidus and one U. pictorum, with very clear umbonal 

 ridges, from the coal -wharf at Boothstown and the canal at Booth's Hall Bridge ; 

 also Neritina fltiviatilis from the canal at Chester. 



By Mr. J. Wilfrid Jackson : Linitma glabra from Cork (Lord de Tabley 

 collection, Manchester Museum) and particularly fine specimens (white variety) 

 of the same species from Beswick, Manchester ; also Physa heterostropha, Planorbis 

 dilatattis and Sphczrium pailiduin fronr the Bolton Canal between Agecroft and 

 Clifton Junction. 



In the special exhibit, Natica, large series were shown by Mrs. Gill, Messrs- 

 B. R. Lucas, C. H. Moore, J. G. Kitchen, and the Manchester Museum. 



470th Meeting, held at the Manchester Museum, March 13th, 1918. 



Mr. R. Standen in the chair. 



Donations to the Library announced and thanks voted : 

 From Lieut. -Col. H. H. Godwin-Austen, Messrs. J. Cosmo Melvill, Charles 

 Upton, and Hans Schlesch. 



Member Resigned. 



Miss M. V. Lebour. 



Mrs. L. J. Smith. 

 E. I). Marquand. 



Members Deceased. 



Exhibits. 



By Mr. W. H. Davies : Planorbis corneus from Sale, and Vivipara conteda 

 from Chorlton-cum- Hardy. 



By Mr. W. E. Alkins : Helix lumoralis from Baguley, and Hygromia hispida 

 and H. striolata from Oakamoor, Staffs. 



By Mr. G. C. Spence : Several species of Epirobia and Urocoptis. 



By Mr. J. W. Jackson : Two Chank-shell trumpets from India ; also young 

 stages of Anodonla cygnaa, showing sculpture on um bones, from the canal at 

 Booth's Hall Bridge, near Worsley, Lanes. 



By Mr. F. Taylor: A large series of 6'//^fc;7«/« /«///(/«/« and peculiar variety ; 

 also a curious form of ^S". cornentn from the canal at Ashton-under-Lyne ; young 

 shells taken from quite small examples of both the above species ; a large set of 

 Amnicola iaylori, including a sinistral example, all remarkably clean, from the 

 canal at Reddish, Lanes. This is a new locality for the species. 



By Mr. J. G. Kitchen : Limncea palustris and var. albida, Planorbis vortex and 

 PL fontanus from Timperley, Ches. ; L. stagnalis and PI. vortex from Ashley 

 Mills, Ches. ; PI. albtis from Sinderland, Ches. 



In the Special Exhibit, Area, series were shown by Messrs. J. Ray Hardy, 

 C. H. Moore, J. G. Kitchen, Mrs. Gill, and the Manchester Museum. 



It was decided to have the following Special Exhibits : 

 April 1 0th - - Pteropoda. 



May 8th - - Thersites group of Helix. 



June 1 2th - - Macroctrainiis. 



