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\v. West aUb g. s. West: alga-flora of Yorkshire. 41 



Mid W. — Cowgill Wokl Moss, Wicldale Fell, in peaty pools 

 amongst Sphagnum cuspidaiiini var. phDiwsum. 



The cells were solitary or in pairs (after division), and occurred 

 somewhat sparingly among a large quantity of Arihrodevnus 

 Incus. - It was very difficult to determine the precise nature of 

 the spiral, because of its irregularity and the small size of the 

 plant; it only made from half to three-quarters of a turn, and the 

 protO]}lasm (outside the spiral) contained some large granules. 



156. Spirotaenia obscura Ralfs. 



N.E.^Terrington, abundant (vi. 1898). 



157. Spirotaenia acuta Hilse. 



N.E. Pilmoor, near Thirsk. 



158. Spirotaenia tenerrima Arch. 



N.E.— Pilmoor, near Thirsk. 



Genus MESOT.ICNIUM Nag., 1S49. 



159. Mesotaenium DeGreyii Turn. 



Mid W.— Blubberhouscs (W. B. Turner), llkley. -Simon Seat. 

 Black Hill, near Settle. 



160. Mesotaenium mirificum Arch. 



S.W. — Ogden Clough, forming gelatinous masses on dripping 

 shale rocks. Length, 25-36 //.; breadth, 15-18//-. 

 Mid W. — Ingleton. 



161. Mesotaenium macrococcum (Kiitz.). [Syn. Palmo- 



glcea macrococcum Kiitz., 1845; Mesolienium Braunii 

 DeBary, 1858]. 

 S.W.— Hebden Bridge. 



Mid W. — Not unfreciuent among wet mosses in narrow glens. 

 Adel Bog (W. B. Turner). Above Eldwick. On stones in stream 

 near Giggleswick ; also among wet mosses near Giggleswick. 

 Linn Ghyll. 



N.W.— Sedbergh. 



Var. micrococcum (Kiltz.) Kirchn. [Syn. Paluioglcea 

 micrococca Kiitz. ; Mesotmiium Braunii var. minus 

 De Bary]. 



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