W. WEST AND G. S. WEST : ALGA-FLORA OF YORKSHIRE. 69 



296. Cosmarium pachydermum Lund. 

 Mid W. — Malham Tarn. Penyghent. 



N.E. — Pilmoor, near Thirsk. 



Var. minus Nordst. 

 N.W. — Cautley Spout. 



297. Cosmarium Cucumis Corda. 



S.W. — Crims worth Dean. Ogden Clough. Near Keighley. 



Mid W.— Baildon. Rombald's Moor. Wigton Moor. 

 Moughton Fell. Penyghent. Ribblehead. Cowgill Wold 

 Moss, Widdale Fell. 



N.W. — Mickle and Cronkley Fells. Staindale. Near Moor- 

 cock Inn. 



N.E. — Gormire, Strensall! (W. B. Turner). Scarborough Mere. 



S.E. — Skipwith Common. 



298. Cosmarium Subcucumis Schmidle. 



S.W. — Ogden Clough, abundant along with Closterium 

 Ehrenbergii among Vaucheria sp. 



Mid W. — In a ditch near Ilkley. 



N.W.— Cautley Spout. 



This species was described by Schmidle in Berichte der 

 Naturf. Gesellsch. Freiburg, Bd. vii.. Heft i, p. 98, t. iv., 

 f. 20 — 22. The Yorkshn-e specimens agree more with those 

 from the south of England (cfr. Journ. Roy. Micr. Soc. 1897, 

 p. 485) than with the original ones from Germany. 



299. Cosmarium subtumidum Nordst. 



Mid W. — Bog two miles south of Clapham. Arncliffe. 

 N.W. —Cronkley Fell. 



300. Cosmarium cyclicum Lund. 

 N.W.— Mickle Fell. 



Var. angulatum West 1889. [Syn. ? C. Nordstedtii 

 Reinsch ; C. cyclicmn var. tntncatiim Borge 1894]. 

 Mid W. — Penyghent (iv. 1896). 

 N.W.— Mickle Fell. 



301. Cosmarium monomazum Lund. 

 Mid W. — Penyghent. 



Bot. 5— E 



