W. WEST AND G. S. WEST: ALGA-FLORA OF YORKSHIRE. 15^ 



Forming dark purplish-red clots on damp earth, rocks, and 

 stones. 



S.W. -Sheffield (A. Carr). Bradford. Bingley. Idle. Shelf. 



Mid W. — Wetherby (F. A. Lees). Leeds district (J. Abbott). 

 Selby (H. F. Parsons). Markington! (Rev. J. S. Tute). 



Genus CHROOCOCCUS Niig., 1849. 



790. Chroococcus turgidus (Kiitz.) Nag. 

 S.W. — CuUingworth. Steeton. Elslack. 



Mid W.— Holden Gill (T. Hebdenj. Wigton Moss. Ingle- 

 borough. Whernside. Baildon. Malham Tarn Bog. Peny- 

 ghent. Cam Fell. Giggleswick Common. 



N.W. — Baugh Fell. Snaizeholme Fell. Cautley Spout. 



N.E. — 'Frequent.' Pilmoor, near Thirsk. 



S.E. — Riccall Common. Hornsea Mere. Sandholme. 

 Market Weighton. 



791. Chroococcus helveticus Niig. 

 S.W. — Ogden Clough. 



Mid W.— Wet rocks, Shipley Glen (vii. 1895). Holden Gill, 

 near Keighley. South of Cray Moss. 



N.W.— Lund's Fell. 



This species has not previously been recorded for the British 

 Isles. 



792. Chroococcus giganteus West. 



N.W. — Hunter's Hole, Craydale Moor (1,900 feet). 



793. Chroococcus cohaerens (Breb.) Nag. 



Mid W. — Penyghent. Cocket Moss, near Giggleswick. 

 Staveley Dam, near Knaresborough. 

 N.W.— Mickle Fell. 

 N.E. — Pilmoor, near Thirsk. 



794. Chroococcus minor (Kiitz.) Nag. 

 S.W.— Ogden Clough. 



Mid W. — Kilnsey. Langcliffe, near Settle. 

 N.W.— Cowgill Wold Moss, Widdale Fell. 

 N.E. — Pilmoor, near Thirsk. 



