196 VORKSHIRF. naturalists' UNION. 



Genus CERATONEIS Ehrenb., 1840. 



955. Ceratoneis Arcus (Ehrenb.) Kiitz. 



[Syn. Euttotia Arms (Ehrenb.) W. Sm.J. 

 Mid W. — Whernside. Holden Gill, near Keighley. Simon 

 Seat. 



N.W.— Calf Beck, Hovvgill Fells. Cautley Spout. Great 

 Shunnor P'ell. Muker. Hunter's Hole, Craydale Moor 

 (1900 ft.). Mickle Fell. Cowgill Wold Moss, ^Viddale Fell. 

 A'^ar. Amphioxys (Rabenh.) De Toni. 



[Syn. Ceratoneis Amphioxys Rabenh.]. 

 MidW. — ^Vhernside. Leathley. Holden Gill, near Keighley. 

 Harrogate. Oak Beck. 

 N.W.— Calf Beck, Howgijl Fells. Lund's Fell. 



Family SYNEDRE^. 

 Genus SYNEDRA Ehrenb., 1831. 



956. Synedra pulchella Kiitz. 



S.VV. — Doncaster town water ; Firsby reservoirs ; Hatfield 

 district (M. H. Stiles). Bingley. Liversedge (Rev. "\V. Fowler I). 

 Keighley. Shipley. Farnley. 



MidW. — Baildon. Whernside. Arthington. Otley. Kilnsey 

 Boston Spa. Harrogate. Ribblehead. 



N.W.— Mickle Fell. River Ure. 



N.E. — Hayburn Wyke. Rievaulx Abbey. Ingleby Greenhow. 

 Malton. 



S.E. — Tickton. Loftsome Bridge, near Wressle. Riccall 

 Common. Reservoir Waterworks, Hull (G. Norman). 



Var. acicularis (W. Sm.). [Syn. Synedra acicularisW .Sim.; 

 S. Smithii Ralfs; S. pulchella var. Smithii (Ralfs) 

 V.H.]. 

 S.W.— Mirfield. 



Var. minutissima (W. Sm.). [Syn. Synedra minutissima 

 W. Sm. ; 5. pulchella var. lanceolata O'Meara]. 

 Mid W. — Buckden. 



Trans. V.N.U., 1899 (pub. July 1901). Bot. Series, Vol. 5. 



