W. WEST AND G. S. WEST: ALGA-FLORA OF YORKSHIRE. I3I 



N.E.— Gormire (W. B. Turner). 

 S.E. — Riccall Common. 



633. Nephrocytium Nagelii Gran. 

 N.W.— Mickle Fell. 



N.E. — Pilmoor, near Thirsk. 

 S. E. — Newsholme. 



634. Nephrocytium lunatum West. 

 Mid W. — Staveley Dam, near Knaresborough. 

 N.E. — Pilmoor, near Thirsk. 



635. Nephrocytium ecdysiscepanum West & G. S. 

 West, 1897. 



N.E. — Pilmoor, hear Thirsk (vi. 1898). 



636. Nephrocytium allantoideum Bohlin, 1897. 

 N.E. — Pilmoor, near Thirsk (vi. 1898). 



This species was described by Bohlin in Bihang till K. 

 Svenska Vet.-Akad. Handl., Band 23, afd. iii., no. 7. 

 It has not been previously recorded for the British Isles. 



Genus OOCYSTIS Nag., 1855. 



637. Oocystis solitaria Wittr., 1879. 



Mid W. — Whernside. Penyghent. Near Oughtershaw. Cocket 

 Moss, near Giggleswick. 



N.W.— Sedbergh. Cronkley Fell. Birkdale Tarn Moss. 

 Hunter's Hole, Craydale Moor (1,900 ft.). Mossdale Moor, 

 Widdale Fell. Bog, near Widdale Beck. Jervaulx Abbey. 

 Mickle Fell. 



N.E. — Pilmoor, near Thirsk. Malton. 



S.E. — Hornsea Mere. Market Weighton. 

 Forma major Wille, 1879. 



N.W. — Mossdale Moor, Widdale Fell. 



638. Oocystis crassa Wittr. 



Mid W. — Malham Tarn Bog. Abundant near Oughtershaw 

 Tarn. 



N.W.— Hunter's Hole, Craydale Moor (1,900 ft.). Dodd Fell 

 (2,000 ft.). Snaizeholme Beck. 



