Earlier this year M. Wanner and P. Leiderer reported (Phys. Rev. Lett. 42, 315; 1979) that they had observed an intriguing two-dimensional crystal lattice of electron filled dimples at the interface of a phase separated 3He-4He mixture. This unexpected experimental result, which was obtained at the Technical University of Munchen, has now received a fairly complete explanation from H. Ikezi of Bell Laboratories, who describes his calculations in a recent issue of the same journal (Phys. Rev. Lett. 42, 1688; 1979).