W. WEST AND G. S. WEST : ALGA-FLORA OF YORKSHIRE. , 23 



The chromatophores are plate-like and parietal; the cells are 

 not enveloped in mucus. 



Genus CH/ETOPHORA Schrank, 1789. 



69. Chaetophora pisiformis (Roth.) Ag., 1812. 

 S.W. — Rawcliffe. Askern. Frizinghall. 



Mid W. — Near Giggleswick. Boston Spa. Near Selby. 

 N.W.— Ure Head, Lund's Fell. 

 S.E.— Beverley. 



70. Chaetophora tuberculosa (Roth.) Ag. 

 S.W.— Keighley (T. Hebden). 



Mid W.— Baildon. Airton. Buckden. York ! (T. Hick). 

 Askham Bog. 



N.E.— Strensall (W. B. Turner). 



71. Chaetophora elegans (Roth.) Ag. 



S.W. — Dewsbury (C. B. Crawshaw and C. P. Hobkirk). 

 Mid W. — Adel and Roundhay, near Leeds (W. B. Turner). 

 Baildon. Selby (H. F. Parsons). 

 N.W.— Mickle Fell. Cotterdale. 

 N.E.— Saltburn. Strensall ! (W. B. Turner). Terrington. 



72. Chaetophora cornu-damae (Roth.) Ag. 



[Syn. Chxiophora endivafolia Auct.]. 

 S.W. — Saltaire. Bingley. 



Mid W.^ — Horton-in-Ribblesdale. Near Buckden. 

 N.E. — Strensall. Pilmoor, near Thirsk. Scarborough Mere ! 

 (G. E. Massee, 1881) ; very fine (viii. iSgo). 



Genus DRAPARNAUDIA Bory, 1808. 



73. Draparnaudia glomerata (Vauch.) Ag. 



Mid W. — Markington ! (Rev. J. S. Tute). Roundhay, near 

 Leeds (W. B. Turner). Eldwick. Ilkley. Ingleton. Bell Busk. 



S.W. — Dewsbury (C. B. Crawshaw). Eccleshill, near Brad- 

 ford ! (W. Nuttall). Bingley. Holden Ghyll, near Keighley. 



74. Draparnaudia plumosa (Vauch.) Ag. 

 S.W.— Upper Bradfield (Rev. R, A. Gatty). Clayton, 



