184 YORKSHIRE NATURALISTS' UNION. 



Var. capitatum (Ehienb.) V.H. 



[Syn. Gomphonema capitatum Ehienb.] 



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

 Near Mirfield. Bradford. CuUingworth. Bingley. 



Mm W. — Malham Tarn. Boston Spa. Baildon. Ribblehead. 



N.W.— Cronkley Fell. Great Shunnor Fell. Dodd Fell. 

 Sedbergh. 



N.E. — Seamer. Terrington, 



S.E.—Loftsome Bridge, near Wressle. Cottinghani ; Hornsea 

 deposit (G. Norman). Anlaby Road (Dr. Munroe). 



910. Gomphonema acuminatum Ehrenb. 



S.W. — x\skern, Cusworth, and Hatfield districts ; Firsby 

 reservoirs; Doncaster (!) town water; Rossington (M. H. Stiles). 

 Goole ; Roche Abbey (E. Hunter). Askern ; Hatfield Chase 

 (J. M. Kirk). Denholme. 



Mid W. — Wigton Moor. Roundhay (W. B. Turner). 

 Markington (Rev. J. S. Tute \ ). Baildon. Bolton Woods. 

 Boston Spa. 



N.W. — Sedbergh. Mickle Fell. Great Shunnor Fell. Jervaulx 

 Abbey. 



N.E. — Seamer. Egton. Staindale. Pilmoor, near Thirsk. 

 Scarborough Mere. Terrington. Malton. Carlton Bank. 



S.E. — Near Stetton. Newsholme. Loftsome Bridge, near 

 Wressle. Market Weighton. Drififield ; Newsham Lake; 

 Cottingham ; Wawne ; Beverley ; Reservoir waterworks, Hull 

 (G. Norman). 



Var. coronatum (Ehrenb.) V.H. 



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



911. Gomphonema Augur Ehrenb. 



[Syn. G, cristattim Ralfs], 

 Mid W, — Staveley Dam, near Knaresborough. 

 N.W.— Cronkley Fell. 

 S.E. —Wressle. 



912. Gomphonema montanum Schumann. 

 Var, commutatum Grun. 



— Trans. Y.N.U., 1901 (pub. July 1901). Bot. Series, Vol. 5, 



