Biddulphia S.F. Gray 1821, p. 294

Diatoma liber Suhr (1831, p. 686), Diatoma interstitiale Agardh (1832, p. 54) and Biddulphia septemlocularis Kützing (1844, p. 138) all seem to have been described and named by different authors for specimens found in material Suhr acquired from the Canary Islands.