Deviations from a Stokes-Einstein relation between the self-diffusion coeff
icient D and shear viscosity eta for liquid metals near freezing are shown
to correlate with a net transit parameter xi introduced recently by Wallace
[Phys. Rev. E 58, 538 (1998)] in a two-parameter model of D. Brief comment
s are made on the single exception of In, for the seven liquid metals for w
hich suitable experimental data are available. [S1063-651X(99)07108-1].