PLATE XXVI. 



Navicula splendida, Greg., p. 193. 



Navicula splendida, var. Puella, p. 193. 



Navicula constricta, Gran., p. 194. 



Navicula Ent onion (EJir.), A.S., p. 195. 



Navicula ir.cuivati., Greg., p. 195. 



Navicula rr-nsca, Greg., p. 196. 



Navicula musca, Greg., p. 196. 



Navicula lineata, Donk., p. 195. 



Navicula subcincta, A.S., p. 195. 



Navicula Chersonensis, (Jrun., p. 196. 



Navicula Eudoxia, A.S., p. 196. 



Navicula Eugenia, A.S., p. 196. 



Navicula fueca, Greg., var. Norvegica, p. 199. 



Navicula fusca, var. subrectangularis, p. 199. 



Navicula fusca, var. Gregorii, p. 199. 



Navicula fusca, var. delicatula, p. 199. 



Navicula fusca, var. hyperborea, p. 199. 



Navicula fusca, forma excisa, p. 199. 



Navicula nitescens, Greg., p. 198. 



Navicula suborbicularis, Greg., p. 199. 



Navicula suborbicularis, var. coffeaeformis, p. 199. 



Navicula notabilis, Grev., p. 200. 



Navicula notabilis, var. expleta, p. 200. 



Navicula advena, A.S., p. 200. 



Navicula advena, var. parca, p. 200. 



Navicula hyalina, Donk., p. 201. 



