198 YORKSHIRE NATURALISTS' UNION. 



Mid W.— Roundhay; South Milford (\V. B. Turner). Aust- 

 wick. Baildon. Malham Cove (J. M. Kirk). Boston Spa. 

 Knaresborough. Bell Busk. 



N.W.— Sedbergh. Mickle and Cronkley Fells. 

 • N.E. — Malton. Scarborough. 



S.E. — Beverley. Routh. Spring Ditch; Risby Pond; River 

 Derwent; Cottinghaui ; Newbald; Wawne; Reservoir Water- 

 works, Hull (G. Norman). 



Var. subsequalis (Grun.) V.H. 

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



Var. sequalis (Kiitz. ) Rabenh. [Syn. .S. cequalis Kiitz.]. 

 S.E. — Riccall Common. 



Var. longissima (W. Sm.) Grun. 



[Syn. .S. longiss'uua W. Sm.]. 

 S.W.— Wilsden. 



Mid W, — Rombald's Moor. 



Var. amphirhynchus (Ehrenb.) V.H. 



[Syn. S. atjipliirliyficlijis Ehrenb.]. 

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



A^ar. obtusa (W. Sm.) V.H. [Syn. S. ohtnsa W. Sm.]. 

 N.E.— Egton. 



Var. oxyrhynchus (Kiitz.) V.H. 



[Syn. .5". oxyrhynchus Kiitz.]. 

 S.W. — CuUingworth. 



959. Synedra Acus (Kiitz.) Grun. 

 S.W.— Hatfield district; Rossington (M. H. Stiles). Greet- 

 land, near Halifax. Fixby. 



Mid W.— Kihisey. Bell Busk. Wigton Moor. Bolton Woods. 

 Harrogate. Ilkley. 



N.E. — Pilmoor, near Thirsk. Ingleby. Malton. 

 S.E. — Loftsome Bridge^ near Wressle. Newsholme. Near 

 Meaux Abbey. Skipwith Common. 



Var. delicatissima (W. Sm.) Grun. 



[Syn. ^. delicatissima \Y. Sm.]. 



Trans, Y.N.U., igoi (pub. July igoi). Bot Serie;;, Vol, 5, 



