Evolution of CVs below the period gap. Solid lines show evolution in the Ṁ₂ − P_orb plane for the same tracks as in Fig. 1. Ticks on each track denote timesteps of 300 Myr. The dotted vertical line denotes Ṁ₂ = 10⁻¹¹ M_⊙ yr⁻¹. During further evolution, the system is presumably undetectable (see text). Observed period bouncer candidates from Table B.1 are also plotted. Eclipsing systems are plotted as circles, while non-eclipsing systems are plotted as triangles. The systems labelled and marked with stars have their Ṁ₂ derived from X-ray luminosity (Eq. (C.2)), while the others have Ṁ₂ derived from WD properties (Eq. (C.1)). The horizontal shaded region is the observed period minimum spike (80 ≲ P_orb/min ≲ 86) reported by Gänsicke et al. (2009).