\ 



W. WEST AND O. R. WEST ; ALGA-FLORA OF YORKSHIRE. 1 7 



determination was kindly made for us by Karl E. Him, of 

 Helsingfors, Finland. It has not previously been recorded from 

 the British Isles. 



42. CEdogonium princeps (Ilass.), Wittr. 



N.W.— Near Sedbergh. 



43. CEdogonium vesicatum (F.yngb.), Wittr. 



Mid W.— Branihopc (J. Abbott). 

 N.E.—Strensall (W. B. Turner). 



44. CEdogonium Ahlstrandii Wittr. 



N.E. — Pilmoor, near Thirsk. 



This species has not previously been recorded from tlie 

 British Isles. 



45- 

 N.W. 



CEdogonium subsetaceum Kiitz. 



-Near Sedbergh. 



46, CEdogonium delicatulum Kiitz. 



S.W. — Askern. 



N.E.—Strensall (W. B. Turner). 



47. CEdogonium tapeinosporum Wittr, 



r 



N.E. — Pilmoor, near Thirsk. 



Not previously recorded from the British Isles. 



i 



4 



Famii,y CYLINDROCAPSA CE.E. 



Genus CM JNDROCAl'SA Rcinsch, 1867. 



48. Cylindrocapsa geminella Wolle var. minor Hansg. 



N.E. — Carlton Bank. 

 Only 



■^ 



known elsewhere in the British Isles from Cambridge 



shire. 



Ori>kr CONKFRVOIDE.^^ ISOCiAM.E. 



Family ULVACE.E. 



Genus ENTEROMORPIIA Link., 1S20. 



49. Enteromorpha intestinalis (L.)j Pink. 



Generally distributed in ditches and drains throughout the 

 county; also more rarely in ponds. 



S.W.— Bradfield (Rev. R. A. Catty), Coole (H. F. Parsons). 

 In tlic Thorn River or Dyke, Rossington (F. A. Lees). In the 



