ACTA SOCIETATls PRO FAUNA BT FLORA FBNNICA, VIII. l). 2, 



THE DIATOMS 



OF 



FI N LAN D 



BY 



P. T. CLEVE 



■v::h three plate; 



(RECEIVED MAY 13, 1890) 



-=TX§X>— 



HELSINGFORS 



HEIRS OF J. SIMELIUS, 1891 



