194 ANNALS OF SCOTTISH NATURAL HISTORY 



Mierasterias, Ag. 



Micrasterias denticulata, Breb. Tent's Moor. 

 ,, rotata, Grev. Tent's Moor. 



papillifera, Breb. Tent's Moor. 



,, truncata, Corda. Tent's Moor. 



,, crenata, Ralfs. Tent's Moor. 



Euastrum, Ehr, 



Euastrum vermcosum, Ehr. Tent's Moor. 

 oblongum, Grev. Tent's Moor. 

 ,, ampullaceum, Ralfs. Tent's Moor. 

 ,, ansattini, Ralfs. Tent's Moor. 

 ,, pectinatum, Breb. Tent's Moor. 

 ., rostratum, Ralfs. Tent's Moor. 

 ,, elegans, Breb. Tent's Moor. 

 ,, bidentatum^ Nag. Tent's Moor. 

 ,, declive, Reinsch. Tent's Moor. 

 ,, denticulatum, Kirch. Tent's Moor. 

 binale, Turp. 



(a) Forma minuta, Lund (Ralfs, " Br. Ues.," t. xiv. 8a 



Tent's Moor. 

 (/>) Forma (Ralfs, I.e., 8/;). Peat End. 



(c) Forma (Ralfs, I.e., Sc, d). Tent's Moor. 



(d) Forma (Ralfs, I.e., Se). Tent's Moor. 



Cosmarium, Corda. 



Cosmarium margaritiferum, Turp. Tent's Moor ; Scotscraig. 



,, reniforme, Archer. Tent's Moor. 



Turncri, Roy. Tent's Moor. 



,, prcemorsum, Breb. Tent's Moor. 



,, ochthodes, Nordst. Tent's Moor. 



,, tetraophthalmum^ Kiitz. Tent's Moor. 



,, Botrytis, Bory. Tent's Moor. 



,, Brebissonii, Menegh. Tent's Moor. 



gemmiferum, Breb. Kemback ; Mount Melville. 



gradation, Roy. Mount Melville. 



punctulatuin, Breb. Peat End. 



siibpunctulatum, Nordst. Tent's Moor ; Kemback 



Peat End ; Scotscraig. 



Blyttii, Wille. Peat End. 



Slewdrumense, Roy. Tent's Moor ; Mount Melville. 



,, striatum, Boldt. Tent's Moor. 



,, substriatum, Nordst. Tent's Moor. 



