153 
Himantidium pectinale, arcus, monodon, gracile, majus, 
undulatum, bidens, tetraodon, 
— Fragilaria constricta, 
Tabellaria fenestrata, 
Tetracyclus lacustris (Biblarium glans et speciosum Ehrnb.), 
Melosira italica, nivalis, 
Surirella splendida, linearis Sm., 
Nitzschia sigmoidea, 
Synedra splendens, 
Cocconeis placentula, 
Cymbella cuspidata, maculata, affinis, scotica, 
Cocconema lanceolatum, asperum, 
Gomphonema acuminatum cum var. et G. coronatum, 
j Navicula aponina, microstoma, gracillima Greg., sphero- 
— bhora, levissima, hemiptera, carassius , bry viridis, major, 
nobilis, Tabellaria, gibba, cardinalis, 
Stauroneis phoenicenteron, gracilis, amphicephala. 
j Frequentissime sunt species: Melosire (italica et nivalis), 
— Tetracyclus, Navicula major, nobilis. 
Specimen VI. — E Tavastia”). 
Epithemia gibberula, Hyndmanni, 
Odontidium mutabile, 
Melosira italica (orichalcea), arenaria, 
Synedra ulna (et var. mesolepta), vitrea, danica, biceps, 
Splendens, 
Gomphonema capitatum, acuminatum (cum varr.), constric- 
tum, dichotomum, intricatum, vibrio, 
. Cocconeis placentula, 
") Dedit id Museo Fennico cel. prof. A. E. Arppe. Locus specialis 
ignotus, Specimen VII, e Kalvola, ab eodem datum fuit. 
