i86 



Clarence J. Elmore 



PLATE 9 



Page 



Figs. 312-318. Navicula cryploccphala Kiitz 76 



Fig. 319. A'^. sp. 



Figs. 320-324. A^. rhynchocephala Kiitz 76 



Figs. 325; 326. A'^. hungarica Grun yy 



Figs. 327, 328. N. digit o-radiata (Greg.) Ralfs yy 



Figs. 329, 330. A", rcinhardtii Grun yy 



Figs. 331, 332. iV. mimieivau koncnsis n. sp 78 



Figs. 333-336. A^. lanccolata Kiitz 78 



Figs, ssy, 338, 344. A^. gastrum Ehr 79 



Figs. 339-343. A^. anglica Ralfs 79 



Fig. 345. A^. placcntula (Ehr.) Kiitz 79 



Figs. 346-350. A^. diccphala (Ehr.) Kiitz 80 



Figs. 351, 352. A^. distans (W. Sm.) V. H. The specimens appear 

 to belong to this species but the species is described only as marine. 



Figs. 353-355- A^- amphibola CI 81 



Figs. 356-359. A'', pygmaea Kiitz 81 



Figs. 360-362. N. crucicula ( W. Sm.) Donkin 82 



Figs.' 363-365. A^ palpebralis Breb 83 



Fig. 366. A^. lacustris A. Sch 83 



Fig. 367. A'^. scutum Schum 83 



