FIGURES 10–16. Mesobiotus philippinicus sp. nov.—buccal apparatus: 10—buccal apparatus seen in PCM (paratypes), dorso-ventral projection with dorsal teeth and dorsal placoids, upper insert shows ventral placoids (of the same paratype) whereas the lower insert shows ventral teeth with the medio-ventral tooth divided into 4 oval teeth (a different paratype); 11 – 14—ventral teeth seen in PCM, in Figs 11–12 the medio-ventral tooth is divided into two oval teeth whereas in Figs 13–14 into three oval teeth; 15–16—oral cavity armature seen in SEM (paratype)—dorsal and ventral teeth, respectively; filled arrowheads indicate teeth of the first band, empty arrowheads indicate teeth of the second band, teeth of the third band are marked with "M" (median teeth) and "L" (lateral teeth), rhombi indicate the ring fold. Scale bars in µm.