Spectra of the newly discovered UHE WDs. The positions of photospheric lines (H I, He I, He II, and C IV), α and β transitions between Rydberg states (n – n′) of the ionization stages V–X, and approximate line positions of the UHE features (blue) are marked. Over plotted in red are TMAP models and the effective temperatures, surface gravities, and chemical compositions (in number ratios) as determined in this work. The spectrograph used for the observation is indicated in gray.