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We present phase resolved FUV HST FOS spectra of the rapidly rotating, highlymagnetic white dwarf RE J0317-853. Using these data, we construct a new modelfor the magnetic field morphology across the stellar surface. From an expansioninto spherical harmonics, we find the range of magnetic field strengths presentis 180-800MG. For the first time we could identify an absorption featurepresent at certain phases at 1160A as a ``forbidden'' 1s_0 -> 2s_0 component,due to the combined presence of an electric and magnetic field.Comment: 15 pages including 4 figures. Accepted for publication in ApJ Letter

Phase-resolved Far-Ultraviolet [ITAL]Hubble Space Telescope[/ITAL] Spectroscopy of the Peculiar Magnetic White Dwarf RE J0317−853