| Fig. | | Page | | NAVICULA | | 1 | Navicula tumida (BrÉb.) Cl. | 99 | | 2 | Navicula brasiliensis var. bicuneata Cl. forma constricta. | 92 | | 3 | Navicula delawarensis Grun. | 92 | | 4-6 | Navicula pusilla Wm. Sm. | 91 | | 5 | Navicula humerosa BrÉb. | 91 | | 7 | Navicula spectabilis var. emarginata Cl. | 94 | | 8 | Navicula pusilla var. subcapitata n. var. | 91 | | 9 | Navicula punctulata Wm. Sm. | 92 | | 10 | Navicula lyra Ehr. | 93 | | 11 | Navicula hennedyi var. manca A. S. | 93 | | 12 | Navicula hennedyi Wm. Sm. | 93 | | 13 | Navicula lyra var. dilatata A. S. | 93 | | 14 | Navicula yarrensis Grun. | 101 | | 15 | Navicula yarrensis Grun. (smaller form) | 101 | | 16 | Navicula yarrensis Grun. var.? | 101 | | | | Fig. | | Page | | NAVICULA | | 1 | Navicula tumida (BrÉb.) Cl. | 99 | | 2 | Navicula brasiliensis var. bicuneata Cl. forma constricta. | 92 | | 3 | Navicula delawarensis Grun. | 92 | | 4-6 | Navicula pusilla Wm. Sm. | 91 | | 5 | Navicula humerosa BrÉb. | 91 | | 7 | Navicula spectabilis var. emarginata Cl. | 94 | | 8 | Navicula pusilla var. subcapitata n. var. | 91 | | 9 | Navicula punctulata Wm. Sm. | 92 | | 10 | Navicula lyra Ehr. | 93 | | 11 | Navicula hennedyi var. manca A. S. | 93 | | 12 | Navicula hennedyi Wm. Sm. | 93 | | 13 | Navicula lyra var. dilatata A. S. | 93 | | 14 | Navicula yarrensis Grun. | 101 | | 15 | Navicula yarrensis Grun. (smaller form) | 101 | | 16 | Navicula yarrensis Grun. var.? | 101 | |
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