Redshifts of the gravitational lenses MG 1131+0456 and B1938+666

The redshifts of the gravitational lens galaxies in MG 1131 + 0456 and B1938 + 666 are 0.844 and 0.881, respectively. Both are early-type galaxies lying at the redshifts predicted by assuming that they are early-type galaxies with old stellar populations lying on the fundamental plane. We also find evidence for a foreground group of galaxies at z = 0.343 near MG 1131 + 0456. The source redshifts are predicted to be greater than or similar to 1.8 in both systems, but they are so red that infrared spectra will be required to determine their redshifts.