Fig. 6. Holotype of Tonkinomys daovantieni. Dorsal (left) and ventral (right) views of the tail. Note increasing length of scale hairs from base to tail tip. Basal two-thirds of dorsal and lateral surfaces of tail is dark brown, produced by brown pigment in both scales and scale hairs (a); scales and scale hairs (c) on underside and distal one-third of the tail are unpigmented. See text for discussion of pattern variation within the complete sample. Tail is round in cross-section (b).