Mosaic of the one-dimensional rest-frame VIMOS spectra remaining nine spectral members of Cl J0227-0421. Also plotted in the bottom right hand panel (ID = 910259897) is the only member with a less secure spectroscopic redshift that exhibits a strong emission line in its spectrum. In this case we presume the line to be Lyα, though this galaxy does not enter any of our analysis and is presented here and elsewhere only for illustrative purposes. The meanings of all lines are the same as in Fig. 6.