14 



P T. CLEVE, DIATOMS FROM FRANZ JOSEF LAND, 



C. ventricosa Kötz 



v. CEBspitosa KiJTZ 



C. hebridica Grun 



C. gracilis Rabh 



v. lunata W. Sm 



v. Iffivis Oestr 



C. norvegica Grun 



C. incerta v. naviculacea Grun. . . . 



C. sequalis W. Sm 



C. perpusilla A. C 



C. parva W. Sm 



C. botellus Ldt 



C. cymbiformis Kutz 



C. cistula Hempr 



v. maculata Kutz 



v. arctica Ldt 



C. lanceolata Ehb 



C. helvetica Kutz 



C. aspera Ehb 



Gomphonema parvulum Kutz 



v. lagenula Kutz 



v. exilissima Grun 



v. micropus Gn 



T. undata A. C 



G. angustatum KiJTZ 



v. producta Grun 



v. sarcophagus Greg 



G. intricatum Kutz 



G. subtile Ehb 



v. i3agitta ScHUM 



v. rotundata A. C 



G. gracile Ehb. v. dicbotomum W. Sm. 



v. naviculacea W. Sm 



v. cymbelloides Grun 



G. subclavatum Grun 



v. mustela Ehb 



5 C5 



CL, ^J 



