Top panel: masses and radii of the known TEPs. The grey points denote values taken from TEPCat. Their error bars have been suppressed for clarity. WASP-67 b is shown with red (Hellier et al. 2012) and green (this work) points with error bars. Dotted lines show where density is 2.5, 1.0, 0.5, 0.25 and 0.1 ρ_Jup. Bottom panel: the mass-density diagram of the currently known transiting exoplanets (taken from TEPCat). Four planetary models with various core masses and another without a core (Fortney et al. 2007) are plotted for comparison.