The1H N.M.R. spectra of the anions of anthracene, pyrene and triphenylene and the2D N.M.R. spectra of the anions of anthracene-d10and partly, randomly deuterated triphenylene have been measured in ethereal solutions. The hyperfine splitting constants derived from the measured Fermi contact shifts are presented and compared with E.S.R. data and predictions from theory. From the measured1H and2D linewidths the electron spin and rotational correlation times have been calculated. It is shown that the derived rotational correlation times are not very sensitive to anisotropic rotation.