| Caloneis powelli (Lewis) Cleve, 1894 |
| Caloneis probabilis (A. Schmidt) Cleve, 1894 |
| Caloneis silicula (Ehrenb.) Cleve, 1894 |
| Caloneis subsalina (Donk.) Hendey, 1951 |
| Caloneis ventricosa (Ehrenb.) Meister, 1912 |
| Caloneis westii (W. Sm.) Hendey, 1964 |
| Capartogramma Kuff., 1956 |
| Capartogramma crucicula (Grunow) R. Ross, 1963 |
| Chamaepinnularia Lange-Bert. & Krammer, 1996 |
| Chamaepinnularia brevissima (Hust.) C. E. Wetzel & Ector, 2013 |
| Chamaepinnularia calida (N.I. Hendey) Lange-Bert., 1999 |
| Chamaepinnularia clamans (Hust.) Witkowski, Lange-Bert. & D. Metzeltin, 2000 |
| Chamaepinnularia obsoleta (Hust.) C. E. Wetzel & Ector, 2013 |
| Cocconema Ehrenb., 1832 |
| Cocconema mexicanum Ehrenb., 1844 |
| Cymatoneis Cleve, 1894 |
| Cymatoneis circumvallata Cleve, 1894 |
| Cymatoneis sulcata (Grev.) Cleve, 1894 |
| Envekadea Van de Vijver, Gligora, Hinz, Kralj & Cocquyt, 2009 |
| Envekadea pseudocrassirostris (Hust.) Van de Vijver, Gligora, Hinz, Kralj & Cocquyt, 2009 |