W. WEST AND G. S. WEST : ALGA-FLORA OF YORKSHIRE. 37 



136. Spirogyra Jurgensi Kiitz. 

 Mid W. — Baildon Moor. 



137. Spirogyra cataeniformis (Hass.) Kiitz. 

 N. E. — Terrington. 



S.E. — Newsholme, near Howden. 



138. Spirogyra varians (Hass.) Kutz. 



Mid W.— Baildon Moor (vii. 1895). Ribblehead (iv. 1895). 

 N.E.— Terrington (vi. 1898). Malton. 

 S.E. — Newsholme, near Howden. 



139. Spirogyra longata (Vauch.) Kiitz. 



[Syn. Conjugata longata Vauch.]. 

 S.W. — Thornton Moor. Frizinghall. Near Keighley. 

 Mid W. — Baildon. Adel (J. Abbott). Grassington. Ribble- 

 head. 



N.W. — Mickle and Cronkley Fells. Birkdale Tarn Moss. 

 N.E. — Seamer. Scarborough Mere. 

 S.E. — Newsholme, near Howden. 



140. Spirogyra peliucida (Hass.) Kiitz. 



[Syn. Zygnema pellucidum Hass.J. 



S.W.— Hunslet (J. Abbott). 



Mid W.— Harrogate (W. B. Turner). 



We have not seen this characteristic species from Yorkshire, 

 and should much like to confirm the records by finding further 

 specimens. For a complete account of its characters and pecu- 

 liarities see G. S. West, 'Alga-Flora of Cambs.,' Journ. of Bot., 

 1899, p. 109-110. 



141. Spirogyra porticalis (Vauch.) Cleve [Syn. 5. qui- 

 nina (Ag.) Kiitz. ; 6'. porticalis var. quinina (Ag.) 

 Cooke]. 



S.W.— Upper Bradfield (Rev. R. A. Gatty). Sharlston (H. F. 

 Parsons). AUerton. Bradford. Frizinghall. 



Mid W. — Roundiiay (J. Abbott). Baildon. Cowside Beck, 

 Arncliffe. 



N.E. — Scarborough Mere! (G. Massee). 



Bot. 5— C 



