174 VORKSHIRE NATURALISTS UNION. 



S.W.— Roche Abbey (M. H. Stiles). 

 Mid \V. — Shipley. Hawksworth Springs. 

 N.W.— Reeth. 

 N.E. — Seamer. Saltburn. 



S.E. — Loftsome Bridge, near \\ressle. Cottingham (G. Nor- 

 man). 



86 1. Navicula Semen Ehrenb. 



. S.W.— Hatfield district (M. H. Stiles). 

 S.E. — Cottingham ; Hornsea Peat deposit ; Risby Pond 

 (G. Norman). 



862. Navicula dicephala Ehrenb. 



S.W. — Doncaster town water {M. H. Stiles). Halifax. 

 AUerton. Marley, near Bingley. Ogden Clough. CraggVale, 

 towards Blackstone Edge. 



Mid W. — Whernside. Malham Tarn Bog. Bowland Knotts. 

 Hawksworth Springs. Near Buckden. Kildwick. 



N.^^^— Mickle Fell. Great Shunnor Fell. Dodd Fell (in 

 great abundance in stream at 1500 ft.). Muker. Bog near 

 '\A'^iddale Beck. Snaizeholme Beck. 



N.E.— Goathland. 



S.E. — Near Meaux Abbey. Beverley. Routh. Waghen. 

 Tickton. Cottingham ; Haltenprice (G. Norman). 



863. Navicula gracillima Ralfs. 



[Syn. Pinnularia gracillima Greg.]. 

 N.E. — Rocky stream, Saltersgate (G. Norman). 



864. Navicula Smithii Breb. 



S.E. — Ditch near River Hull (G. Norman). 



865. Navicula elliptica Kiitz. [Syn. N. ovalis W. Sm.]. 

 S.W. — Chellow Dean. Marley, near Bingley. Cullingworth. 



Roche Abbey (M. H. Stiles ; J. N. Coombe). Ogden Clough. 

 Askern, Cusworth and Hatfield districts ; Firsby reservoirs 

 (M. H. Stiles). 



Mid AV. — Baildon. Penyghent. Near Buckden. South of 

 Cray Moss. Moughton Fell. Markington (Rev. J. S. Tute ! ). 



Traii.s. V.N.U., 1901 (pub. July 1901). Bot Series, Vol. 5. 



