W. WEST AND G. S. WEST: ALGA-FLORA OF YORKSHIRE. l6l 



S.W. — Woolley. Bradford. Ogden Clough. Roche Abbey 

 (J. N. Coombe ; M. H. Stiles). Askern and Cusworth districts ; 

 Firsby reservoir ; Doncaster town water (M. H. Stiles). 



Mid W. — Roundhay (W. B. Turner). Baildon. Moughton 

 Fell. Whernside (1900 ft.). 



N.W. — Frequent. Great Sleddale. 



S.E. — Riccall Common. Beverley. Hull. Spring Ditch ; 

 Newsholme Lake (G. Norman). 

 Var. parva (W. Sm.) V. H. 



[Syn. Cocconema parvum W. Sm.]. 

 S.W. — Askern district ; Doncaster town water (M. H. Stiles). 

 Goole ; Roche Abbey (E. Hunter). Bradford. Bingley, 

 Denholme. 



Mid W. — Baildon. Wigton Moor. Holden Gill, near Keighley. 

 Cowside Beck, Arncliffe. Cocket Moss, near Giggleswick. 

 N.E. — Common. Staindale. Hayburn Wyke. Saltburn. 

 N.W.— Dodd Fell. 



S.E.— Anlaby Road (Dr. Munroe). Hull (G. Norman). 

 809. Cymbella Cistula (Hempr.) Kirchn. 



[Syn. Cocconema Cistula Hempr.]. 

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

 Stiles). Askern, Cusworth, and Hatfield districts; Rossington; 

 Firsby reservoirs and Doncaster town water (M H. Stiles). 

 Mid W.— Rombald's Moor. Moughton Fell. Arthington. 

 Staveley Dam, near Knaresborough. Cowside Beck. Arncliffe. 

 Linn Gill. Whernside. 



N.W.— Dodd Fell. Cautley Spout. 

 ~ N.E. — Common. Staindale. 



S.E.— Beverley ! Loftsome Bridge, near Wressle. Spring 

 Ditch; Hornsea Peat Deposit; Skirlaugh; Wawne (G. Norman). 

 Var. maculata (Kiitz.) Grun. 



[Syn. Cymbella maculata Kiitz.]. 



S.W.— Firsby reservoir (M. H. Stiles). 

 Mid W. — Boston Spa. 

 N.W.— Lund's Fell. 



