Image source: Brady (1884) pl. 89, figs 10a-c. Identified as as a synonym of his new species subbertheloti by Cushman (1924) but comparison with his holotype from Samoa suggests it is not D. subbertheloti - pers. obs. B Hayward, 2020.
Image source: Todd, R. 1965. The Foraminifera of the Tropical Pacific Collections of the ”Albatross”, 1899-1900. Part 4. Rotaliform families and planktonic families [End of Volume]. Bull. U.S. Nation. Mus 161: v+139 pp.+28 pls.