1910-1911.] The Alga- Flora of Mid- Lothian. 369 



130. Anahcena circinalis Eabenh.. 



Craiglockhart Pond ; Duddingston Loch. July, August. 



131. A. Flos-aquce Breb. 



Craiglockhart Pond. December. 



132. A. Hassallii (Kiitz.) Wittr. var. tenuis (W. & G. S. West) Lemm. 



Forming " water bloom " in Duddingston Loch. July. 



133. A'phanizomenon Flos-aquce (L.) Ralfs. 



Sterile filaments among other Algae, margin of Harelaw Eeservoir. 

 August. 



134. Cylindrospermum majus Kiitz. 



On damp earth in garden, Edinburgh. August, September. 



135. C. licheniforme (Bory) Kiitz. 



Found in same locality as C. majus, forming black shiny patches. 

 Edinburgh. August, September. 



136. C. stagnate (Kiitz.) Born. & Flah. 



Bavelaw Moor, on damp peat. August. 



137. G. catenatum Kalfs. 



On drying-up mud, Bonally Eeservoir. September. 



Family — Oscillatoriaceae. 



Sub-Family — YAGiNARiEiE. 



138. Microcoleus vaginatus (Yauch.) Gom. 



On damp earth, roadside, Edinburgh. 



139. M. paludosus (Kiitz.) Gom. 



On damp earth, Musselburgh. 



Sub-Family — Lyngbye^. 



140. Lynghya Marteithsiana Menegh. 



In warm water of about 40° C., Newbattle Colliery. August. 

 Also outlet of Harelaw Eeservoir, August ; Colinton Dell, 

 September. 



141. L. nigra Ag. 



On damp woodwork, Colinton Dell. Trichomes 10-11 n crassa, cells 

 2-4 fi longa, (New to Britain.) 



142. Phormidium autumnale (Ag.) Gom. 



Very common on damp earth, base of walls, &c., forming shiny 

 black patches. 



143. Ph. luridum (Kiitz.) Gom. 



Malleny Glen and Bavelaw Moor, May-August ; Elf Loch, 

 August. 



144. Ph. Retzii (Ag.) Gom. 



Malleny Glen, in running water. April-September. 



145. Ph. tenue (Menegh.) Gom. 



Craiglockhart Pond, in plankton, together with Botryococcus 

 Braunii. August. 



