Band I. Tafel XXI. 



187. Actinoptyclius hnngaricus nov. spec. Szent-Peter ^"k 



188. Plagiogramma biharense nov. spec. Elesd ®"/i 



189. Actinoptyclius leptomitos nov. spec. Dolje ^^U 



190a. Plenrosigma eudon nov. spec. Szent-Peter *^'/i 190b *^/i 



191. StephanodlscusKanitzii Grün. Pant. forma: major Elesd ^/i 



192. Navicula (marginata Lew. var.?) mastogloidea 



nov. spec. Szent-Peter ^U 



193. Terpsinoe americana (Bail.) Ralfs forma: trigona 



gonis dilatatis Elesd ^A 



