1910-1911.] The A Iga- Flora of Mid- Lothian, 365 



80. P. duplex Meyen. 



Elf Loch. June. 



81. P. tetras (Ehrenb.) Ealfs. 



Bavelaw Moor ; Craiglockhart. August. 



82. P. hiradiatum Meyen. 



Bavelaw Moor. August. 



Family — Protocoecaceae (or Autosporaceae). 



Sub-Family — Ccelastre^. 



83. Coelastrum sphcericum Nag. 



Bavelaw Moor. August. 



84. Sorastrum spinulosum Nag. 



Bog-pool, Bavelaw Moor. July. 



S ub-Family — Crucigenie^. 



85. Crucigenia rectangularis (Nag.) Gay. 



Craiglockhart Pond. December. 



Sub-Family — Selenastre^. 



86. Scenedesmus oUiquus (Turp.) Kiitz. 



Very common, not only in the plankton of Duddingston Loch 

 and Craiglockhart Pond, but also in the Elf Loch and other 

 ponds, pools, and ditches. 



87. S. quadricauda (Turp.) Br^b. 



Found in similar situations as S. ohliquus. 

 87a. Var. maximus (22 /* x 9 /u each cell) was found in bog-pool at Bave- 

 law Moor. August. 



88. Anhistrodesmus falcatus (Corda) Ralfs (= Rhaphidium fasciculatum 



Kutz.) 

 Elf Loch ; Bavelaw Moor ; Craiglockhart Pond. Common. 



89. Selenastrum Bibraianum Reinsch. 



Bavelaw Moor. July. 



90. S. gradle Reinsch. 



Harelaw Reservoir. August. 

 9L Kirchneriella ohesa (West) Schmidle. 

 Harelaw Reservoir. August. 



Sub-Family — Oocystide^. 



92. Oocystis solitaria Wittr. 



Among sphagnum, Bavelaw Moor. April, May. 



93. Nephrocytium Agardhianum Nag. 



Elf Loch. May. 



94. Palmellococcus miniatus Chod. { = Pleuroccus miniatus Nag.) 



Common on flower-pots in hothouses. 



95. Chlorella vulgaris Beyer. 



Symbiotic in the tissues of Hydra viridis, Stentor cceruleum, &c. 



