154 YORKSHIRE naturalists' UNION. 



is also a more or less conspicuous granule towards each end of 

 the chromatophore. 



S.W. — Keighley Moor. 



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



Genus GLAUCOCYSTIS Itzigs., 1854. 



764. Glaucocystis Nostochinearum Itzigs. 



Mid W. — Cocket Moss, near Giggleswick. 

 N.W. — Mossdale Moor, Widdale Fell. 

 N.E. — Pilmoor, near Thirsk. 



Genus MERISMOPEDIA Meyen, 1839. 



765. Merismopedia glauca (Ehrenb.), Nag. 

 S.W. — Cullingworth. Mirfield. Greetland, near Halifax. 

 Mm W. — Adel Bog. Whernside. Ribblehead. 

 N.W. — Mickle Fell. Lund's Fell. Jervaulx Abbey. 



N.F. — Strensall. Scarborough Mere. Scalby Beck, Saltburn. 

 S.E. — Riccall Common. Peat deposit, Filey. Skipwith 

 Common. 



766. Merismopedia punctata Meyen. 

 N.E. — Rievaulx Abbey. 



S.E. — Riccall Common. 



767. Merismopedia hyalina Kutz. 



S.W. — Pond, Frizinghall, among Microthamnion Kiitzingia- 

 num (iii. 1897). 



768. Merismopedia aeruginea Breb. 

 Mid W. — Crook Gill, near Buckden. 

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



Genus TETRAPEDIA Reinsch., 1867. 



769. Tetrapedia Reinschiana Arch. 

 Mid W. — LangclifFe, near Settle. 



N.E. — Pilmoor, near Thirsk. 



S.E. — Riccall Common. Skipwith Common. 



770. Tetrapedia glaucescens (Wittr.) Boldt. 

 Mid W. — Langcliffe, near Settle. 



N.E. — Pilmoor, near Thirsk (iv. i! 



Trans. Y.N.U., iSgg (pub. July 1901). Bot. Series, Vol. 5. 



