| Fig. | | Page |
| 1 | Caloneis liber (Wm. Sm.) Cl. | [81] |
| 2 | Anomœoneis sphærophora (Kuetz.) Cl. | [80] |
| 3 | Nitzschia spathulata Bréb. | [120] |
| 4 | Stauroneis ? abnormal | [89] |
| 5 | Navicula ? abnormal | [101] |
| 6 | Podocystis adriatica Kuetz. | [129] |
| 7 | Nitzschia dissipata (Kuetz.) Grun. | [120] |
| 8 | Cymbella ventricosa Kuetz. (zone view) | [62] |
| 9 | Navicula radiosa Kuetz. (zone view) | [94] |
| 10 | Detail of Rhabdonema arcuatum (Lyng.) Kuetz. | [35] |
| 11 | Diatoma anceps (Ehr.) Kirchn. (containing chromataphores) | [42] |
| 12 | Coscinodiscus asteromphalus Ehr. (trans. section, after Pelletan) | [23] |
| 13-14-15 | Transverse section (diagram) of Pinnularia showing straight, oblique and grooved raphes | [101] |
| 16 | Transverse section (diagram) of Biddulphia favus showing inner punctate stratum (after Deby) | [31] |
| 17 | Transverse (ideal) section of Surirella | [124] |
| 18-19 | Transverse (ideal) section of Pinnularia, before and after division | [101] |
| 20 | Transverse section of Nitzschia linearis (Ag.) Wm. Sm. | [122] |
| 21 | Transverse section (diagram) of Navicula | [89] |
| 22 | Transverse section (diagram) of Cymbella | [60] |
| 23 | Transverse section (diagram) of Amphora | [65] |
