212 YORKSHIRE NATURALISTS' UNION. 



S.E. — Riccall Common. Beverley. Waghen. Market 

 Weighton. Withernsea; Cottingham (G. Norman), 

 looo. Nitzschia apiculata (Greg.) Grun. 



[Syn. Tryblionella apiadata Greg.]. 

 S.E.— Patrington (G. Norman). 



loci. Nitzschia acuminata (W. Sm.) Grun. 



[Syn. T)ybIionella aa(mi?iata W. Sm.]. 

 S.W.— Goole (J. Harrison). 



S.E. — Cottingham (G. Norman). Timber Pond, Hull (R. 

 Harrison). 



1002. Nitzschia circumsuta (Bail.) Grun. 



[Syn. Surirella circumsuta Bail. ; Tryblionella Scutel- 



Inm W. Sm.]. 

 S.W. — Goole (J. Harrison). Askern district (M. H. Stiles). 

 Mid W.— Roundhay (W. B. Turner). 



1003. Nitzschia bilobata W. Sm. 



S.E. —Outlet of Hornsea Mere; Dairycoats; ditch near 

 River Hull (G. Norman). 



1004. Nitzschia Denticula Grun. 



[Syn. Denticula obtusa W. Sm.]. 

 Mid W.— Malham Cove (J. M. Kirk). Bingley. Holden Gill, 

 near Keighley. 



N.E.— Beast Cliff. Near Scarborough. 



1005. Nitzschia sinuata (W. Sm.) Grun. 



[Syn. Denticula simiata W. Sm.]. 

 S.W.— Askern district (M. H. Stiles). Ogden Clough. 

 Mid \v. — Baildon. Holden Gill, near Keighley. Cowside 



Beck, Arnclifife. 



S.E.— Market Weighton. Cottingham; Beverley Parks (G. 



Norman). 



1006. Nitzschia paradoxa (Gmel.) Grun. 



[Syn. Bacillaria paradoxa Gmel.]. 

 S.W. —Goole. 

 S.E. NearStoneferry; Market Weighton Canal (G. Norman). 



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



