Van Heurck -- Synopsis des Diatomées de Belgique -- Index
| Tetracyclus | sp. ? [Lewis] = Tabellaria binalis (Ehrenb.) Grunow | Page ? | Plate 44 | Figure 23 | |
| Tetracyclus | braunii Grunow = Tetracyclus rupestris (A.Braun) Grunow | Page ? | Plate 52 | Figure 13,14 | |
| Tetracyclus | rupestris (A.Braun.) Grunow | Page 167 | Plate 52 | Figure 13,14 |