We present Subaru spectroscopy of the early-type lensing galaxies in the lens systems HST 14113 + 5211 ( at the redshift z _ { L } = 0.464 ) and B 2045 + 265 ( z _ { L } = 0.868 ) , being aimed at measuring the velocity dispersion of the lensing galaxies as an important component to their mass distributions and internal dynamics . For HST 14113 + 5211 we have obtained 174 \pm 20 km s ^ { -1 } ( 1 \sigma ) inside an aperture of 0.″9 , and for B 2045 + 265 we have obtained 213 \pm 23 km s ^ { -1 } inside an aperture of 1.″2 . To extract the significance of these information on the mass distributions and stellar dynamics of the lensing galaxies , we construct two alternative models for both the mass and velocity distributions . It is found that the mass-to-light ratios as derived from a joint lensing and stellar dynamics analysis are virtually consistent with those obtained from the use of the Fundamental Plane . Also , for HST 14113 + 5211 , we find that the total mass distribution is well reproduced by a power-law density profile with an index of 2 , thereby suggesting that a singular isothermal model is a good fit to the lensing galaxy . In contrast , the corresponding slope for B 2045 + 265 is flatter than isothermal , suggesting that additional contributions to lensing mass from surrounding structures ( possibly the group of galaxies ) provide the observed angular separations of multiple images .