W. WEST AND G. S. WEST: ALGA-FLORA OK YORKSHIRE. 1 89 



N.E. — Strensall (W. B. Turner). Saltburn. 

 S.E.— Beverley. Routh. Near Meaux Abbey. ^Vaghe^. 

 Cottingham ; '\\"a\vne (G. Norman). 



939. Achnanthes Biasolettiana Grun. 

 N.W. — Jervaulx Abbey. 



930. Achnanthes Hungarica Grun. 

 S.W.— Horton Park, Bradford. 



N.W. — Jervaulx Abbey, vii., 1898, abundant. 



Genus COCCONEIS Ehrenb., 1835. 



931. Cocconeis Pediculus Ehrenb. 



S.W. — Cusworth and Hatfield districts ; Rossington (M. H. 

 Stiles). Castleford. 



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

 Esholt. Holden Gill, near Keighley. Arthington. Harrogate. 

 Bolton Woods. Near Settle. Kilnsey. Cowside Beck, Arncliffe. 

 Oughtershaw Moss. Ingleton. Ribblehead. Bog two miles 

 south of Clapham. Moughton Fell. Knaresborough.- 



N.W. — -Duerley Beck, near Hawes. 



N.E. — Frequent. Hayburn Wyke. Scalby Beck. Terrington. 

 Rievaulx Abbey. Malton. Stokesley. 



S.E. — Beverley. Cottingham ; River Hull, etc. (G. Norman). 



932. Cocconeis Placentula Ehrenb. 



S.W. — Askern and Hatfield districts ; Firsby Reservoirs ; 

 Rossington (M. H. Stiles). Roche Abbey (M. H. Stiles .; J. N. 

 Coombe). Marley, near Bingley. Ogden Clough. Doncaster. 

 Frizinghall. 



Mid W. — Harrogate (G. Norman). Baildon. Malham Tarn. 

 Moughton Fell. Cowside Beck, Arncliffe. Hawksworth Springs. 



N.W. — INIasham. Great Shunnor Fell. Jervaulx Abbey. 

 Dodd Fell. 



N.E. — -River Derwent, Forge Valle3^ Seamer. Saltburn. 

 Carlton Bank. 



S.E. — Hornsea Mere. Routh. Newsholme. Beverley. Foft- 

 some Bridge, near AVressle. 



