W. WEST AND G. S. WEST: ALGA-FLORA OF YORKSHIRE. 6 1 



N.W. — Mickle and Cronkley Fells. 

 N. E. — Pilmoor, near Thirsk. 



251. Euastrum humerosum Ralfs. 

 N.E. — Pilmoor, near Thirsk (vi. 1898). 



252. Euastrum oblongum (Grev.) Ralfs. 

 S.W. — Rawcliffe Common. Cullingworth. 



Mid W.— Markington ! (Rev. J. S. Tute). iVdel. Malham 

 Tarn Bog. Cocket Moss, near Giggleswick. Giggleswick 

 Common. 



N.W. — Mickie and Cronkley Fells. Snaizeholme PVll. 



N.E. — Strensall ! (W. B. Turner). Pilmoor, near Thirsk (with 

 zygospores). Terrington. 



S.E. — Skipwith Common. 



253. Euastrum didelta (Turp.) Ralfs. 

 S.W. — Cullingworth. 



Mid W.— Eldwick. Adel ! (W. B. Turner). Ilkley (W. H. 

 Dikes). Bride Cross, above Farnley Moor. Malham Cove 

 (J. M. Kirk). Cocket Moss, near Giggleswick. Giggleswick 

 Common. Ingleborough. Cam Fell. 



N.W. — Mickle and Cronkley Fells. Great Sleddale. Lund's 

 Fell. Bog near Widdale Beck. 



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



254. Euastrum affine Ralfs. 



Mid W. — Bog two miles south of Clapham. Cam Fell. Cow- 

 gill Wold Moss, Widdale Fell. Whernside. 

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



255. Euastrum ampullaceum Ralfs. 

 S.W. — Cullingworth. 



Mid W.— Adel Dam (W. B. Turner). Wigton Moor. Ilkley 

 (W. H. Dikes). Whernside. 



N.W. — Bog near Widdale Beck. 



256. Euastrum sinuosum Lenorm. 



[Syn. E. circulare Hass.]. 

 Mid W. — Baildon. Penyghent. 



