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| Fig. | Page | |
| CYMATOPLEURA | ||
| 1 | Cymatopleura elliptica (Bréb.) Wm. Sm. | 129 |
| 2 | Cymatopleura elliptica forma spiralis | 129 |
| 3-4 | Cymatopleura marina Lewis | 129 |
| CAMPYLODISCUS | ||
| 5 | Campylodiscus hibernicus Ehr. | 130 |
| 6 | Campylodiscus echeneis Ehr. | 130 |
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| Fig. | Page | |
| 1 | Amphora gigantea var. fusca A. S. | 65 |
| 2 | Meloseira crenulata (Ehr.) Kuetz. | 15 |
| 3-4 | Licmophora baileyi (Edw.) Grun. | 40 |
| 5 | Coscinodiscus polyacanthus Grun. | 22 |
| 6-7 | Ditylum intricatum (West) Grun. | 30 |
| 8 | Pyxidicula cruciata Ehr. | 19 |
| 9 | Gyrosigma scalproides (Rab.) Cl. | 76 |
| 10 | Coscinodiscus asteromphalus var. omphalantha (Ehr.) Grun. | 23 |
| 11 | Rhabdonema minutum Kuetz. | 36 |
| 12 | Gyrosigma kuetzingii (Grun.) Cl. | 76 |
| 13 | Gyrosigma prolongatum (Wm. Sm.) Cl. | 76 |
| 14 | Cymbella parva (Wm. Sm.) Cl. | 61 |
| 15 | Gomphoneis herculaneum (Ehr.) Cl. (zone view) | 70 |
| 16 | Cymbella ventricosa Kuetz. | 62 |
| 17-18 | Eunotia sp. (abnormal?) | 54 |
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| Fig. | Page | |
| 1 | Nitzschia spectabilis var. americana Grun. (zone view) | 122 |
| 2 | Nitzschia panduriformis Greg. | 117 |
| 3 | Hantzschia amphioxys (Ehr.) Grun. | 113 |
| 4 | Hantzschia amphioxys var. major Grun. | 114 |
| 5 | Nitzschia dubia Wm. Sm. | 118 |
| 6 | Nitzschia amphioxys Wm. Sm. | 114 |
| 7 | Nitzschia compressa (Bail.) | 116 |
| 8 | Nitzschia compressa var. minor H. L. Smith | 116 |
| 9 | Surirella intermedia Lewis (zone view) | 128 |
| 10 | Surirella arctissima A. S. forma minor | 128 |
| 11 | Surirella ovalis Bréb. | 126 |
| 12 | Surirella biseriata (Ehr.) Bréb. | 124 |
| 13 | Nitzschia sigma (Kuetz.) Wm. Sm. | 121 |
| 14 | Nitzschia obtusa var. flexella H. L. Smith | 121 |
| 15 | Stauroneis legumen Ehr. | 89 |
| 16 | Nitzschia obtusa Wm. Sm. | 121 |
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| 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 |