l62 YORKSHIRE NATURALISTS' UNION. 



S.E. — Ditch, Anlaby to Hessle Road; Beverley; Cottingham ; 

 Haltenprice ; Reservoir AVaterworks (G. Norman). 

 8io. Cymbella truncata Rabenh. 

 Mid W.— Esholt. 



8 1 1. Cymbella helvetica Kiitz. 

 Mid W. — Ingleton. Shipley Glen. Cowside Beck, Arncliffe. 

 Dropping Well, Knaresboiough. 



N.E. — Rievaulx Abbey. Saltersgate (G. Norman). 



S.E. —Spring Ditch ; Market Weighton Canal (G. Norman). 



812.— Cymbella Isevis Nag. 

 Mid W. — Ingleton, on wet rocks, amongst Cladophora 

 glomerata. 



Genus ENCYOxNEMA Kiitz., 1834. 



813. Encyonema prostratum (Berk.) Ralfs. 

 S.W.— Roche Abbey (J. N. Coombe; M. H. Stiles). Bradford. 



Firsby reservoirs ; Hatfield district (M. H. Stiles). 



Mid W. — Harrogate (G. Norman). Malham Tarn (H. F 

 Parsons. Moughton Fell. How Hill, Markington (Rev. J. 

 S. Tute ! ). Ribblehead. Near Otley. Knaresborough. 

 Ingleborough. 



N.W.— Muker. 



N.E. — Terrington. Ingleby Greenhow. 



S.E. — Wawne ; Reservoir Waterworks, Hull (G. Norman). 



814. Encyonema turgidum (Greg.) Grun. 



[Syn. Cymbella turgida Greg.]. 

 S.W, — Wibsey. Denholme, Liversedge ! (Rev. W. Fowler). 

 MidW. — Bolton Woods. Simon's Fell. Linn Gill. Rombald's 

 Moor. 



N.E. — Scalby Beck. Ingleby Greenhow. 



815. Encyonema caespitosum Kiitz. 



S.W. — Bradford. AUerton. Bingley. Mirfield. Roche 

 Abbey (J. N. Coombe ; M. H. Stiles). Firsby reservoirs. 

 Rossington ; Hatfield district (M. H. Stiles). 



MidW. — BirkCrag. Harrogate (G.Norman). Ingleborough. 

 Arthington. Rombald's Moor. Malham Tarn. 



Trans. Y.N.U., 1899 (pub. July igoi). Bot. Series, Vol. 5. 



