  Qualitative changes in the collective excitation spectra of the $\rho$-meson
triplet in neutron matter is studied, with particular emphasis on the breaking
of the discrete $p\leftrightarrow n$ symmetry. The appearance of additional
branches in the dispersion characteristics, the mass splitting among the charge
states, the splitting between longitudinal and transverse modes of the
$\rho^{\pm}$ mesons and the appearance of `island' modes (or loops) in the
time-like region are some of the features that are exposed.
