Distribution of MW satellites in the mean metallicity vs. luminosity plane. Large black points correspond to MW dwarf galaxies, as listed in Kirby et al. (2013b), supplemented by Norris et al. (2010), Kirby et al. (2015), and Simon et al. (2015). MW globular clusters are shown as small black dots (Harris 1996). The red squares corresponds to the Tri II measurements, with the filled square representing the inference from the two robust individual stellar metallicities (stars 40 and 46) while the hollow circle corresponds to the inference from the five stars shown in Figure 4 (the two Tri II points have been slightly offset from each other along the luminosity axis so their error bars do not overlap). Both measurements compare well with those of other MW dwarf galaxies.