Here are the 3 skinks you're likely to meet while bushwalking in Tasmania.
Ocellated skink (Carinascincus ocellatus) or spotted skink (endemic to Tasmania)
usually lives in rocky habitats. It is brown to grey in colour with dark spots aligned on the sides and spots and bars along the back. It grows up to 7.4 cm in length. More at https://en.wikipedia.org/wiki/Chalcides_ocellatus
Tasmanian tree skink (Carinascincus pretiosus) or agile cool-skink (endemic to Tasmania)
Grows up to about 5.7 cm in length. It has a black line along the centre of its back, followed by a white ragged-edged line on each side. More at https://en.wikipedia.org/wiki/Tasmanian_tree_skink
Photo by JMsayers CCÂ CC0 1.0 Universal Public Domain Dedication
Southern snow skink (Carinascincus microlepidotus) (endemic to Tasmania)
Grows up to about 5-7 cm in length. It is a dark coloured lizard with a typical white midlateral stripe on the flanks.