We present new FUV/UV observations of the DA white dwarf Wolf 1346 obtained with the Hopkins Ultraviolet Telescope .
The atmospheric parameters of this object are estimated from a fit of model atmospheres to several optical spectra to be T _ { eff } = 20000 K , log~ { } { \it g } = 7.90 .
From the optical spectrum this star is a normal DA without any indications for chemical elements other than hydrogen .
The hydrogen line L \beta , however , shows a very unusual shape , with a steep red wing and two absorption features on this wing .
The shape is reminiscent of the effects of quasi-molecular line broadening , as observed in L \alpha in cooler DA white dwarfs .
We show that this is indeed the correct explanation , by identifying 4 quasi-molecular satellites caused through perturbations by the H ^ { + } ion ( H _ { 2 } ^ { + } quasi-molecule ) .
The steep red wing is caused by the exponential decline of the line profile beyond the satellite most distant from the line center at 1078 Å .