202 YORKSHIRE NATURALISTS UNION, 



Mid W. — Near Norwood Hall, above Lindley Reservoir. 

 Kilnsey. jNIalham Cove. Malham Tarn Bog. Horton-in- 

 Ribblesdale. Ribblehcad. Whernside. Boston Spa. Baildon. 

 Eldwick. 



N.W.— Lund's Fell. Dodd Fell. Howgill Fells. Widdale 

 Fell. Mickle Fell. Great Shunnor Fell. Havves. 



S.E. — Beverley. Routh. Loftsome Bridge, near \\'ressle. 

 Tickton. Near Meaux Abbey. Haltenprice. Cottingham ; 

 Market "Weighton ; Driffield (G. Norman). 

 Var. constrictum (Ralfs) V.H. 



[Syn. Meridian constrictum Ralfs]. 



S.W. — Keighley. 



N.W. — Cronkley Fell, (ireat Shunnor Fell. Cotterdale. 



S.E. — Spring Ditch (Dr. Munroe). 



Family DIATOME.E. 

 Genus DIATO^rA DC, 1805. 



972. Diatoma vulgare Bory. 



S.W. — Cusworth district ; Rossington ; Roche Abbey (M. H. 

 Stiles). Askern (G. Norman ; M. H. Stiles). Hatfield Chase 

 (G. Norman). Roche Abbey (J. N. Coombe). Shipley. 



Mid W, — Harrogate (G. Norman). Arthington. Near Nor- 

 wood Hall, above Lindley Reservoir. Holden Gill, near Keigh- 

 ley. Bolton AVoods. Otley. Oughtershaw Moss. Whernside. 

 Ripley : Knaresborough (G. Norman). 



N.W. —Winch Bridge. Mickle Fell. 



N.E.— Whitby. Lockton. Strensall (W. B. Turner). Hay- 

 burn Wyke. Scalby Beck. Malton (G. Norman). 



S.E. — Loftsome Bridge, near Wressle. Skipwith Common. 

 W^awne; Reservoir Waterworks, Hull (G. Norman). 



973. Diatoma elongatum Ag. 



S.W. — Cusworth and Hatfield districts; Firsby reservoirs; 

 Rossington (M. H. Stiles), Roche Abbey (J. N. Coombe; 

 M. H. Stiles). Shipley. Doncaster. Liversedge (Rev. W. 

 Fowler!), Fixby. Croole. Heaton. 



Trans. Y.N.U., igoi (pub. Julj' igoi). Uot. Scries, Vol. 5. 



