W. WEST AND G. S. WEST: ALGA-FLORA Of YORKSHIRE. 1S5 



S.W. — Askein district; Firsby reservoir; Uoncaster town 

 water ; Rossington (AI. H. Stiles). 



913. Gomphonema tenellum Kiitz. 



S.W. — Marley, near Ringley. Liversedge (Rev. AV. Fowler !), 

 Heaton. Keighley. Ogden Clough. 



Mid W. — -Whernside. Ribblehead. Baildon. Wigton Moor. 

 Eldwick. 



N.E. — Scarborough Mere. Staindale. Cornelian Bay. 

 Pilmoor, near Thirsk. Ingleby Greenhow. 



S.E. — Near Meaux Abbey. Routh. Waghen. Beverley, 

 Near Sutton. Newsholme. Near Stoneferry ; Driffield ; 

 Skirlaugh ; Hull (G. Norman). 



914. Gomphonema gracile Ehrenb. 



Mid W. — Staveley Dam, near Knaresborough. Cocket Moss, 

 near Giggleswick. 



N.W.— Mickle Fell. 



N.E. —Carlton Bank. 

 Var. dichotomum (Kiitz.) V.H. 



[Syn. G. dichoto)iiu)n Kiitz.], 



Mid W.— Shipley Glen. Pond at Horsforth. 



N.W.— Cronkley Fell. 



N.E. — Strensall. 



S.E. — Waghen. Near Sutton. Near Meaux Abbey. Routh. 

 Tickton. Newbald ; Wawne ; Market Weighton (G. Noripan). 



915. Gomphonema intricatum Kiitz. 



S.W. — Askern, Cusworth and Hatfield districts ; Firsby 

 reservoirs (M. H, Stiles). Ogden Clough. Morley. Goole. 

 Elslack. 



Mid W. — Whernside. Baildon. Bolton W^oods. 



N.W. — Mickle and Cronkley Fells. Great Shunnor Fell. 

 Dodd Fell. 



N.E. — Saltburn. Pilmoor, near Thirsk. 



S.E. — Loftsome Bridge, near Wressle. Market Weighton. 

 Wawne ; Anlaby to Hessle ; Benningholme ; River Derwent 

 (G. Norman). 



