82 YORKSHIRE NATURALISTS* UNION. 



forma Boldtii West in Journ. Roy. Micr. Soc, 1892, 

 p. 726.]. 

 S.W.— Keighley Moor. 



N.W. — Bog near Widdale Beck. Snaizeholme Fell. 

 This variety has not before been recorded for the British 

 Isles. It differs from the typical form in the rather less pro- 

 nounced undulations of the lateral margins, the faintly incised 

 apex, and the reduced protuberances of the vertical view, the 

 central area of the semi-cells being slightly thickened. 



367. Cosmarium venustum (Brdb.) Arch., 1861. [Syn. 

 Evastrum venustum Br6b., 1856; Cosmarium cam- 

 bricum Cooke & Wille, 1880]. 



S.W.— Keighley Tarn. Old Cote Moor. 



N.W.— Mickle Fell. 



S.E. — Riccall and Skipwith Commons. Hornsea Mere. 



368. Cosmarium ovale Ralfs. 

 N.W.— Great Shunnor Fell. 

 N.E.— Strensall. 



369. Cosmarium tetraophthalmum (Kiitz.), Menegh. 

 S.W.— Ogden Clough. 



MiD W.— Bramhope (W. B. Turner). Adel Bog. Eldwick. 

 Malham Tarn. 

 N.VV. — Mickle and Cronkley Fells. 



N.E.— Thirkleby Park (W. B. Turner). Pilmoor, near Thirsk. 

 S.E. — Riccall Common. Cleava Cliffs, north of Selby. 



Var. Lundellii Wittr. 

 N.E. — Pilmoor, near Thirsk. 

 S.E. — Sandholme. Hornsea Mere. 



370. Cosmarium eboracense West. 



Mid W. — Baildon. Cowside Beck, Arncliffe. Half-a-mile 

 south of Cray Moss. 

 N.W.— Cronkley Fell. 

 N.E.— Staindale. 



371. Cosmarium Botrytis (Bory) Menegh. 



S.W. — Denholme. Frizinghall. Cullingworth. Near Keighley. 



Trans. V.N.U., 1897 (pub. Dec. 1900). Bot. Series, Vol. 5. 



