Possible descendants of BCDs (left) and of irregulars (right) in the Virgo cluster. The left panels show a bright (top) and a faint (bottom) early-type dwarf that fall into the structural parameter range of the LSB-components of Virgo BCDs, i.e. they are more compact than the average early-type dwarf. The right panels show a bright (top) and faint (bottom) early-type dwarf that fall into the range of the Virgo irregulars, i.e. they are more diffuse than the average early-type dwarf. All images have a width of 80′′, corresponding to 6.3 kpc at a distance of 16.5 Mpc. The galaxies and their parameters are, clockwise from top left: VCC 0033 (M_r =  −16.85 mag, R_eff = 0.73 kpc), VCC 0510 (M_r =  −17.00 mag, R_eff = 1.64 kpc), VCC 1565 (M_r =  −15.49 mag, R_eff = 1.40 kpc), and VCC 0068 (M_r =  −15.25 mag, R_eff = 0.53 kpc).