1 9 1 o- 1 9 1 1 . ] The A Iga- Flora of Mid-Lothian. 357 



Family — IjemaneaceeD. 



3. Lemanea torulosa Kiitz. 



Burn near Glencorse, Pentland Hills. 



4. Sacheria fluviatilis (Ag.) Sirod. { = Lemanea fluviatilis Ag.) 



In rapid streams, outlet of Loganlee Reservoir, Pentland Hills. 



Order— CRYPTONEMIACEiB. 

 Family — SquamariaeeaB. 



5. Hildenhrandtia rivularis (Liebm.) J. Ag. 



The only British freshwater species of the Order, occurring as 

 dark -red patches on rocks in the Water of Leith, Colinton 

 Dell. July, August. 



Class II.— PH^OPHYCE^ (or FUCOIDE^). 

 Order— SYNGENETIC-aE. 



Family — Chrysomonadinacese. 



6. Synura Uvella Ehrenb. 



Duddingston Loch. June-August. 



7. Uroglena Volvox Ehrenb. 



Marlpit at Davidson's Mains, July, in small numbers. 



Family — DinobryaceaB. 



8. Dinohryon cylindricum Imhof. 



Plankton of Duddingston Loch in great numbers in July ; Craig- 



lockhart Pond in August and September. 

 These two records are the only ones I have been able to identify. 



Other species of Dinohryon will no doubt be found in the 



reservoirs and lochs of Mid-Lothian. 



Family — Phseoeapsaceae. 



9. Phceococcus paludosus W. & G. S. West. 



In ditch, Bavelaw Moor, Pentland Hills. 



10. P. ParoUniana (Nag.) G. S. West in litt. { = Glceocystis Paroliniana 



(Menegh.) Nag.) 

 On base of garden wall, Edinburgh. 



Family — Pheeothamniaceae. 



11. Phceothamnion confervicolum Lagerh. 



I found this Alga for the first time in Great Britain in 1910, in the 

 Upper Elf Loch. 



