  We report on a new measurement of the rapidity dependence of the inclusive
jet production cross section in pbar p collisions at sqrt(s)=1.8 TeV using 92
pb^-1 of data collected by the DZero detector at the Tevatron collider. The
differential cross sections, d^2sigma/(dEt deta), are presented as a function
of jet transverse energy (Et) in five pseudorapidity (eta) intervals, up to
|eta|=3, significantly extending previous CDF and DZero measurements beyond
|eta|=0.7. The extended range of the measurement should provide greater
discrimination among different parton distribution functions. We also discuss
previous measurements of the inclusive jet cross sections made by the two
collider experiments at central pseudorapidities up to |eta|=0.7. Finally, we
present recent measurements from the CDF and DZero experiments of the ratio of
central inclusive cross sections from two center-of-mass energies, 0.63 TeV and
1.8 TeV, as a function of jet Xt. Experimental results are compared to
next-to-leading order QCD predictions.
