Freshivater Algse of North Wales. By Wm. West. 297 
PEOTOPHYTA. 
Group SCHIZOPHYCE^. 
Class Protococcoide^. 
Order Eremobie^. 
Genus Bictyos'phxrium Nag. 
D. Bh'cnhergianum Nag. C., F., A. 
Genus Botryclina Breb. 
B. vulgaris Breb. A. 
Genus Apiocystis Nag. 
A. Brauniana Niig. C. 
This species may probably now have a place in the Class Coenobieae. 
An excellent paper has just appeared in the ‘ Journal of the Linnean 
Society/ by Mr. S. Le M. Moore, which is well illustrated, new 
features in its life-history being portrayed, the results of which point 
to this plant as being “ a degenerate type of Volvocinese.” The long 
cilia which are described should be specially looked for by algal 
students. Mr. Moore thinks this species has only been seen in 
England twice before, at Wimbledon and in Cornwall. I have 
gathered it at Scarborough Mere and Brothers Water ; it is also on 
record for two places in the West Eiding. (Since the above was 
written, Mr. A. W. Bennett has stated in this Journal that Mr. Eoy 
finds it also near Aberdeen. P., 9 Feb. 1890.) 
Genus Nephrocytium Nag. 
N. Agardliianum Nag. C. 
N. Ndegelii Grun. S., B. 
Genus Ophiocijtium Nag. 
O. cochleare Braun. C., B. 
Genus Hormos 2 Jora Breb. 
11. transversalis Breb. C. 
Order PROTOCOCCACEiE (including Palmellaceae). 
Genus Protococcus Ag. 
P. viridis Ag. Common. 
Genus Pleurococcus Meneg. 
P. vulgaris Meneg. Common. 
