the British Marine Algae . 
103 
APPENDIX I. 
The following species must be excluded from the list of British 
Marine Algae, since they have not been proved to grow on the shores 
of Britain, but have only been met with as waifs. 
PHAEOPHYCEAE. 
Cystoseira barbata, C. Ag. 
Laminaria longicruris, De la Pyl. 
Sargassum bacciferum, C. Ag. 
„ vulgare, C. Ag. 
RHODOPHYCEAE. 
Dasya Mulleri, Sond. 
Gelidium cartilagineum, Gaill. 
APPENDIX II. 
The following species may be expected to occur on the shores of 
Britain, having been found either on the Atlantic shores of France, or 
of Norway, or in the Baltic Sea. It is possible that species belonging 
to the Mediterranean Flora may also occur, as well as Nitophyllum 
venulosum , Zan., but it is not possible to suggest with any degree of 
certainty the species which may occur on the South-west coasts of 
England and Ireland. The capital letters N. and S. are employed to 
indicate that they may occur respectively on the Northern or Southern 
shores of Britain. 
CYANOPHYCEAE. 
BrachytricMa Balani, Born, et Flah. S. 
Calothrix Contarenii, Born, et Flah. N. S. 
C. fusco-violacea, Crn. S. 
C. rubra, Born, et Flah. S. 
Gloeotrichia punctulata, Thur. S. 
Lyngbya gracilis, Menegh. S. 
L. membranacea, Kiitz. S. 
L. persicina, Kiitz. S. 
