74 



Spirogjrra insignis Hass. Near Mirfield (W.). 



Spirogyra flavescens Hass. CuUingworth (W.). 



Spirogyra nitida Dillw. Frizinghall, Harrogate, Malliam, <fec. (W.); 



Adel, Bramhope (A., E., and T.). 

 Spirogyra porticalis Vauch. Frizinghall, &c. (W.) ; Roundhay 



(A., E., and T.). 

 Spirogyra Weberi. CuUingworth (W.). 

 Spirogyra pellucida Kiitz. Harrogate (T.). 



Spirog3rra longata Vauch. Baildon, &c. (W.) ; Adel (A., E., and T.). 

 Sirogonium sticticum Kiitz. Baildon (W.) ; Hebden Bridge (W.). 

 Zygogonium ericetorum De Bary var. terrestre. Rombalds Moor 



(W.) ; Baildon (W.) ; Thornton Moor (W.) ; Bramhope (A., E., 



and T.). 

 Zygogonium ericetorum var. aquaticum. Harden; Thornton Moor; 



Rombalds Moor (W.) ; Askwith (T.) 

 Mesocarpus nummuloides Hass. CuUingworth (W.). 

 Mesocarpus parvulus Hass. CuUingworth (W.). ; Askwith (T.). 

 Mesocarpus pleurocarpus De Bary. Baildon, Rawcliffe (W.). 

 Mesocarpus scalaris Hass. Roundhay (A., E., and T.). 

 Staurospermum viride Kiitz. Near Rotherham (W.) ; Horsforth 



(A., E., and T.). 



Order III.— SIPHOPHYCEiE. 



Vaucheria dichotoma Lyngb. var. p. submarina. Goole (W.). 

 Vaucheria sessilis Vauch. Baildon, &c. (W.); Adel (A., E., and T.). 

 Vaucheria geminata Vauch. Keighley, Baildon, &c. (W.) ; 



Harrogate (A., E., and T.). 

 Vaucheria racemosa Eng. Bot. Ingleborough (W.) ; Meanwood 



(A., E., and T.). 

 Vaucheria terrestiis Lyngb. Bradford, Keighley, &c. (W.). 



Order IV.— NEMATOPHYCE^. 



Fam. 1.—ULVACE.E. 



Frasiola crispa Kiitz. CuUingworth, Bingley, Ilkley, AUerton, <fec. 



(W.) ; Leeds (A., E., and T.). 

 Enteromorpha intestinalis. Garforth (A., E., and T.); Goole (W.). 



Fam. IW.—CONFERVAOEjE. 



Microspora fugacissima Ag. Frequent (W.). 

 Microspora vulgaris Rabh. Frequent (W.). 



