33 - 
NOTES ON FRESHWATER ALGA.—III. 
By W. West, F.L.S., anv .G. 8. Wes, M.A., F.L.S. 
(Prates 446-8.) 
Tue alge dealt with in this paper are mostly British forms which 
have come under our notice during the past two years. Durin 
this time we have examined a very large amount of material, and 
have discovered numerous alge previously caaniee for the British 
Isles. A number of these have had to be placed as new genera and 
species, the most interesting one being a species of Debarya, which 
} Thi 
w genera :—Phaosphara, Pseudochate, and Polychetophora. 
ine 0 give et and a much fuller description of inne neglecta, 
und 
the following alge were collected shdsendion rufescens, CE. eryp 
orum var. vulg are, Gi. inerme, Hormiscia subtilis var. vari riabilis, 
Microthamnion oa Cladophora flavescens, Vaucheria sericea, 
Cosmarium tinctum, C. Meneghinti, Conferva bombycina forma minor, 
leta, Ophiocytium pioenetesties Nodularia sp., Merismopedia 
punctata, Navicula dicephala, N. limosa, N. oblonga, N. peregrina, 
N. Iridis, N. Amphisbena, N. viridis, Achnanthes coarctata, A. linearis, 
Cocconeis Placentula, Amphiprora paludosa, Gomphonema ——_ 
Eunotia lunaris, Synedra pulchella, Nitsschia linearis, and N. Palea. 
As these are the first records of freshwater alge from the Scilly 
Islands, this short list should be of de ete 
The most interesting Desmid in this paper is a new subalpine 
Staurastrum—S. echi i ety 2700 ft. on Glyder Fawr, 
North Wales 
RHODOPHYCES. 
1. Cuantransia scotica Kiitz. sas gener. 1848, p. 285; Spec. 
» Rabenh. Flor. Europ. 
bins ee Co. as Ireland, in running W 
rusciform 
2. Bi A FLuviaTiLis (Ag.) —s 7 ieee Sci. Nat. (Bot.) 
tom. pie 1872, p- is : ze f.7 fal Lemanea fluviatilis 
z. Spec p- Tab. Paye. # t. 82. 
"Hab. “ Bhipley ‘Gina, W. culgunre in fast whet 
3. §. ructna (Bory) Sirodot, l.c. p. 74, t. 8, £83, Lemanea 
Jucina Bory. 
Hab. In casera near Giggleswick, and in a torrent at Ingle- 
ton, W.. Yorkshir 
JouRNAL OF bea Vou, 41. [Fes. 1903.] D 
