W. WEST AND G. S. WEST : ALGA-tLORA OF YORKSHIRE. 93 



423. Cosmarium Regnellii Wille. 

 N.E. — Pilmoor, near Thirsk. 



424. Cosmarium Meneghinii Bieb. 



S.W. — Doncaster. Ogden Clough. Cullingworth. 



Mid W. — Blubberhouses (W. B. Turner). Boston Spa. j\Ial- 

 ham Tarn. Penyghent. Arthington. Markington, with zygo- 

 spores ! (Rev. J. S. Tute). Adel Bog. Baildon. Rombald's 

 Moor. 



N.W. — Mickle and Cronkley Fells. Jervaulx Abbey. 



N.E. — Gormire; Strensall (W. B. Turner). Pilmoor, near 

 Thirsk. Saltburn. 



S.E. — ^Riccall Common.- Skipwith Common ! (Rev. W. 

 Fowler). Newsholme. Hornsea Mere. 

 Forma octangularis Wille. 



S.W. — Denholme. 



Mid W. — Adel. Rombald's Moor. Ben Rhydding. Brear- 

 ton, near Knaresborough. Malham Tarn. 



N.W. — Jervaulx Abbey. 



N.E. — Terrington. Malton. 



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

 Var. Wollei Lagerh. 



S.E. — Riccall Common. 



425. Cosmarium angulosum Breb, 



N.E. — Pilmoor, near Thirsk. 

 S.E. — Skipwith Common. 



426. Cosmarium difficile Liitkem. 

 S.W. — Cullingworth. 



Mid W.— Adel Bog. 



N.W.— Mickle Fell. 



N.E. — Carlton Bank. Stokesley. 



Var. sublaeve Liitkem. 

 S.W. — Cullingworth. 



Mid W. — Cocket Moss, near Giggleswick. 

 N.E. — Strensall Common. Pilmoor, near Thirsk, 

 S.E. — Skipwith Common. 



