Band I. Tafel X. 



83. Aulacodiscus Arcliaiigelskianus 0. Witt Archangelsk ^^i^ 



84. Aulacodiscus septus A. Schm.f orma: quatuorradiata Archangelsk »"/^ 



85. Navicula Thumii nov. spec. Ssent-Peter 640/^ 



86. Epithemia gibberula Ktz. var. protracta Gmn. Dolje 1133/^ 

 87a-b. Triceratium Stokesianum Grev. Szent-Peter *i7i 



88. Mastogloia (Smithii Thw. var.) doljensis nov. spec. Dolje «»/^ 



89. Coscinodiscus nndatus (Cleve) Grün. Felsö-Esztergdly ^i^ 



90. Coscinodiscus armatus nov. spec. Felsö-Esztergäly ^i^ 

 91a-b. Triceratium trisulcum Bail. var. hungarica Szent-Peter sis/^ 



