Emissions in the 300-to-900-¿ wavelength range near the dayside oval were observed on April 5, 1979, over the south pole by the EUV spectrometer on board the STP78-1 satellite. The spectra, obtained from 600 km, near local noon, are dominated by spectral lines of singly ionized atomic oxygen. Most prominent features in this passband are O II 538-to-539, 617-, and O II 834-¿ emission lines, all of which have intensities exceeding 100 R. Several weak O II and N II features are present in the spectrum with intensities ranging from 10 to 60 R. In the same pass, we have also obtained EUV spectra from two distinctively different emission regions in the polar cap. A diffuse feature is probably excited by polar rain-like soft particles, while a localized region shows bright emissions most likely excited by keV particles. The brightest spectral feature in this wavelengh range is O II 834 ¿, which was recorded in the latter region with an intensity exceeding 1 kR.