W. WEST AND G. S. WEST : ALGA-FI,ORA OF YORKSHIRE. 209 



Mid W. — Rombald's Moor. Near Otley. Moughton Fell. 



N.W.— Rokeby. 



N.E.— Marske. Strensall. 



S.E. — Near Meaux Abbey. Stoneferry Lane (Dr. Munroe). 



Var. pinnata (VV. Sm.) V.H. 



[Syn. Surirella phmata W. Sm.]. 



S.W.— Rossington (M. H. Stiles). Near Bradford. Chellow 

 Dean. Bingley. Ogden Clough. Near Shipley. Farnley. 



Mid W. — Eldwick. Adel Bog. Oughtershaw Moss. 



N.E. — Strensall. Dalton. Seamer. Scalby Beck. Rievaulx 

 Abbey. Malton. 



S.E. — Beverley. Routh. Newsholme, Market Weighton. 

 Risby Pond ; Cottingham ; Haltenprice ; Hornsea Peat De- 

 posit ; ditch near river Hull (G. Norman). 



Var. panduriformis (W. Sm.). 



[Syn, Surirella panduriformis W. Sm.]. 

 S.VV.— AUerton. 



Mid W. — Harrogate (G. Norman). 



N.W.— Mickle Fell. Rokeby. 



S.E. — Tickton. Skirlaugh ; Market Weighton Canal (G. 

 Norman). 



Var. Crumena (Brdb.) Van Heurck. [Syn. Surirella 

 Criunena Br^b, ; S. Brighhvellii\Y. Sm.]. 



S.W. — Firsby reservoirs ; Rossington (M. H. Stiles). 



Mid W. — Birk Craggs, Harrogate (G. Norman). 



N.E. — Saltersgate {G. Norman). 



S.E. — Outlet, Hornsea Mere; Hornsea Peat Deposit; river 

 Hull ; near Stoneferry ; Reservoir Waterworks, Hull ; Market 

 Weighton Canal ; Haltenprice (G. Norman). 



990. Surirella spiralis Ktttz. 



[Syn. Campylodiscus spiralis W. Sm. ]. 

 S.W.— Roche Abbey (E. Hunter). Askern district (iM. H. 

 Stiles). Cullingworth. Marley, near Bingley. Hebden Bridge. 

 Mid W, — Baildon, Hawksworth, 



