126 YORKSHIRE NATURALISTS UNION. 



This species has not previously been recorded for the British 

 Isles. 



606. Characium tenue Herm. 

 N.E. — Pilmoor, near Thirsk. 



This species has not previously been recorded for the British 

 Isles. 



607. Characium ensiforme Herm, 



Somewhat erect, almost straight, sometimes subarcuate, linear 

 lanceolate, about twenty times longer than the diameter, apex 

 acute, gradually attenuated downwards into a narrow stalk, base 

 slightly dilated ; chlorophyll pale-green, somewhat irregular, with 

 few granules, not filling the whole cell. 



Thickness, 2"5-3'8 [j. ; length, 65-86 /x. 



This agrees with the description of C. ensiforme, but the mar- 

 gin was never ' undulato-tumidula,' and the base was hardly 

 ' nodoso-incrassato.' 



N.E. — Pilmoor, near Thirsk, attached to (Edogoniuni sp. 



This species has not previously been recorded for the British 

 Isles. 



608. Characium acuminatum (A. Br.). 



[Syn. Hydrocytium acuminatuni A. Br., 1855]. 

 Mid W. — Boston Spa. 

 N.E. — Gormire (W. B. Turner). 



This species has not previously been recorded for the British 

 Isles. 



609. Characium heteromorphum (Reinsch). 



(Syn. Hydriamun heteromorphum Reinsch]. 



S.W. — Near Mirfield. Greetland, near Halifax. Keighley 

 Moor. 



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

 Wigton Moor. Boston Spa. Cam Fell. 



N.W.— Mickle Fell. 



N.E. — Scarborough Mere. Terrington. 



S.E. — Newsholme. 



Trans. V-N-.U., iSgoCpiib. July looi). Rut, .Sui-ies, Vol. 5. 



