We have used 87 pb^-1 of data collected with the Collider Detector
at Fermilab to search for new particles decaying to ppbar.  We present
model-independent upper limits on the cross section for narrow resonances
which exclude the color-octet technirho in the mass interval 350 < M < 440
GeV/c^2.  In addition, we exclude topgluons, predicted in models of
topcolor-assisted technicolor, of width Gamma = 0.3M in the mass range 280 < M
< 670 GeV/c^2, of width Gamma = 0.5M in the mass range 340 < M < 640 GeV/c^2,
and of width Gamma = 0.7M in the mass range 375 < M < 560 GeV/c^2.